diff --git a/pandas/pandas.ipynb b/pandas/pandas.ipynb
index c20dd3f..188f9ed 100644
--- a/pandas/pandas.ipynb
+++ b/pandas/pandas.ipynb
@@ -31,7 +31,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 1,
    "metadata": {
     "collapsed": false
    },
@@ -60,7 +60,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 2,
    "metadata": {
     "collapsed": false
    },
@@ -78,7 +78,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 14,
+     "execution_count": 2,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -97,7 +97,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 3,
    "metadata": {
     "collapsed": false
    },
@@ -108,7 +108,7 @@
        "array([ 1,  1,  2, -3, -5,  8, 13])"
       ]
      },
-     "execution_count": 15,
+     "execution_count": 3,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -128,7 +128,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": 4,
    "metadata": {
     "collapsed": false
    },
@@ -139,7 +139,7 @@
        "Int64Index([0, 1, 2, 3, 4, 5, 6], dtype='int64')"
       ]
      },
-     "execution_count": 16,
+     "execution_count": 4,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -157,7 +157,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 5,
    "metadata": {
     "collapsed": false
    },
@@ -173,7 +173,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 17,
+     "execution_count": 5,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -192,7 +192,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 18,
+   "execution_count": 6,
    "metadata": {
     "collapsed": false
    },
@@ -203,7 +203,7 @@
        "True"
       ]
      },
-     "execution_count": 18,
+     "execution_count": 6,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -221,7 +221,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 19,
+   "execution_count": 7,
    "metadata": {
     "collapsed": false
    },
@@ -235,7 +235,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 19,
+     "execution_count": 7,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -253,7 +253,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 8,
    "metadata": {
     "collapsed": false
    },
@@ -267,7 +267,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 20,
+     "execution_count": 8,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -285,7 +285,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 9,
    "metadata": {
     "collapsed": false
    },
@@ -301,7 +301,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 21,
+     "execution_count": 9,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -319,7 +319,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 22,
+   "execution_count": 10,
    "metadata": {
     "collapsed": false
    },
@@ -335,7 +335,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 22,
+     "execution_count": 10,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -356,7 +356,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 23,
+   "execution_count": 11,
    "metadata": {
     "collapsed": false
    },
@@ -370,7 +370,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 23,
+     "execution_count": 11,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -390,7 +390,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": 12,
    "metadata": {
     "collapsed": false
    },
@@ -405,7 +405,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 24,
+     "execution_count": 12,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -425,7 +425,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 25,
+   "execution_count": 13,
    "metadata": {
     "collapsed": false
    },
@@ -440,7 +440,7 @@
        "dtype: bool"
       ]
      },
-     "execution_count": 25,
+     "execution_count": 13,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -458,7 +458,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 14,
    "metadata": {
     "collapsed": false
    },
@@ -473,7 +473,7 @@
        "dtype: bool"
       ]
      },
-     "execution_count": 26,
+     "execution_count": 14,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -491,7 +491,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 27,
+   "execution_count": 15,
    "metadata": {
     "collapsed": false
    },
@@ -506,7 +506,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 27,
+     "execution_count": 15,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -524,7 +524,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 28,
+   "execution_count": 16,
    "metadata": {
     "collapsed": false
    },
@@ -542,7 +542,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 29,
+   "execution_count": 17,
    "metadata": {
     "collapsed": false
    },
@@ -553,7 +553,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 30,
+   "execution_count": 18,
    "metadata": {
     "collapsed": false
    },
@@ -569,7 +569,7 @@
        "Name: foobarbazqux, dtype: float64"
       ]
      },
-     "execution_count": 30,
+     "execution_count": 18,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -587,7 +587,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 31,
+   "execution_count": 19,
    "metadata": {
     "collapsed": false
    },
@@ -602,7 +602,7 @@
        "Name: foobarbazqux, dtype: float64"
       ]
      },
-     "execution_count": 31,
+     "execution_count": 19,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -625,7 +625,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 32,
+   "execution_count": 20,
    "metadata": {
     "collapsed": false
    },
@@ -687,7 +687,7 @@
        "4  4.1    MD  2015"
       ]
      },
-     "execution_count": 32,
+     "execution_count": 20,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -709,7 +709,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 33,
+   "execution_count": 21,
    "metadata": {
     "collapsed": false
    },
@@ -771,7 +771,7 @@
        "4  2015    MD  4.1"
       ]
      },
-     "execution_count": 33,
+     "execution_count": 21,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -790,7 +790,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 34,
+   "execution_count": 22,
    "metadata": {
     "collapsed": false
    },
@@ -858,7 +858,7 @@
        "4  2015    MD  4.1    NaN"
       ]
      },
-     "execution_count": 34,
+     "execution_count": 22,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -877,7 +877,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 35,
+   "execution_count": 23,
    "metadata": {
     "collapsed": false
    },
@@ -893,7 +893,7 @@
        "Name: state, dtype: object"
       ]
      },
-     "execution_count": 35,
+     "execution_count": 23,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -911,7 +911,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 36,
+   "execution_count": 24,
    "metadata": {
     "collapsed": false
    },
@@ -927,7 +927,7 @@
        "Name: year, dtype: int64"
       ]
      },
-     "execution_count": 36,
+     "execution_count": 24,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -945,7 +945,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 37,
+   "execution_count": 25,
    "metadata": {
     "collapsed": false
    },
@@ -960,7 +960,7 @@
        "Name: 0, dtype: object"
       ]
      },
-     "execution_count": 37,
+     "execution_count": 25,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -978,7 +978,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 38,
+   "execution_count": 26,
    "metadata": {
     "collapsed": false
    },
@@ -1046,7 +1046,7 @@
        "4  2015    MD  4.1       4"
       ]
      },
-     "execution_count": 38,
+     "execution_count": 26,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1065,7 +1065,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 39,
+   "execution_count": 27,
    "metadata": {
     "collapsed": false
    },
@@ -1133,7 +1133,7 @@
        "4  2015    MD  4.1     6.1"
       ]
      },
-     "execution_count": 39,
+     "execution_count": 27,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1153,7 +1153,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 40,
+   "execution_count": 28,
    "metadata": {
     "collapsed": false
    },
@@ -1227,7 +1227,7 @@
        "4  2015    MD  4.1     6.1        MD"
       ]
      },
-     "execution_count": 40,
+     "execution_count": 28,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1246,7 +1246,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 41,
+   "execution_count": 29,
    "metadata": {
     "collapsed": false
    },
@@ -1314,7 +1314,7 @@
        "4  2015    MD  4.1     6.1"
       ]
      },
-     "execution_count": 41,
+     "execution_count": 29,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1333,7 +1333,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 42,
+   "execution_count": 30,
    "metadata": {
     "collapsed": false
    },
@@ -1377,7 +1377,7 @@
        "2015  4.1  NaN"
       ]
      },
-     "execution_count": 42,
+     "execution_count": 30,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1398,7 +1398,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 43,
+   "execution_count": 31,
    "metadata": {
     "collapsed": false
    },
@@ -1439,7 +1439,7 @@
        "VA   5.1   5.2   NaN"
       ]
      },
-     "execution_count": 43,
+     "execution_count": 31,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1457,7 +1457,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 44,
+   "execution_count": 32,
    "metadata": {
     "collapsed": false
    },
@@ -1495,7 +1495,7 @@
        "2015  4.1  NaN"
       ]
      },
-     "execution_count": 44,
+     "execution_count": 32,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1516,7 +1516,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 45,
+   "execution_count": 33,
    "metadata": {
     "collapsed": false
    },
@@ -1560,7 +1560,7 @@
        "2015  4.1  NaN"
       ]
      },
-     "execution_count": 45,
+     "execution_count": 33,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1579,7 +1579,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 46,
+   "execution_count": 34,
    "metadata": {
     "collapsed": false
    },
@@ -1623,7 +1623,7 @@
        "2015   4.1  NaN"
       ]
      },
-     "execution_count": 46,
+     "execution_count": 34,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1642,7 +1642,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 47,
+   "execution_count": 35,
    "metadata": {
     "collapsed": false
    },
@@ -1654,7 +1654,7 @@
        "       [ 4.1,  nan]])"
       ]
      },
-     "execution_count": 47,
+     "execution_count": 35,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1672,7 +1672,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 48,
+   "execution_count": 36,
    "metadata": {
     "collapsed": false
    },
@@ -1687,7 +1687,7 @@
        "       [2015, 'MD', 4.1, 6.1]], dtype=object)"
       ]
      },
-     "execution_count": 48,
+     "execution_count": 36,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1712,7 +1712,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 49,
+   "execution_count": 37,
    "metadata": {
     "collapsed": false
    },
@@ -1780,7 +1780,7 @@
        "4  2015    MD  4.1     6.1"
       ]
      },
-     "execution_count": 49,
+     "execution_count": 37,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1798,7 +1798,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 50,
+   "execution_count": 38,
    "metadata": {
     "collapsed": false
    },
@@ -1874,7 +1874,7 @@
        "0  2012    VA  5.0     NaN"
       ]
      },
-     "execution_count": 50,
+     "execution_count": 38,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1892,7 +1892,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 51,
+   "execution_count": 39,
    "metadata": {
     "collapsed": false
    },
@@ -1922,7 +1922,7 @@
        "Index: []"
       ]
      },
-     "execution_count": 51,
+     "execution_count": 39,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1940,7 +1940,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 52,
+   "execution_count": 40,
    "metadata": {
     "collapsed": false
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@@ -1951,7 +1951,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 53,
+   "execution_count": 41,
    "metadata": {
     "collapsed": false
    },
@@ -1967,7 +1967,7 @@
        "dtype: object"
       ]
      },
-     "execution_count": 53,
+     "execution_count": 41,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1978,7 +1978,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 54,
+   "execution_count": 42,
    "metadata": {
     "collapsed": false
    },
@@ -1994,7 +1994,7 @@
        "dtype: object"
       ]
      },
-     "execution_count": 54,
+     "execution_count": 42,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2012,7 +2012,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 55,
+   "execution_count": 43,
    "metadata": {
     "collapsed": false
    },
@@ -2080,7 +2080,7 @@
        "4    MD  4.1     6.1  2015"
       ]
      },
-     "execution_count": 55,
+     "execution_count": 43,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2098,7 +2098,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 56,
+   "execution_count": 44,
    "metadata": {
     "collapsed": false
    },
@@ -2174,7 +2174,7 @@
        "0    VA  5.0     NaN  2012"
       ]
      },
-     "execution_count": 56,
+     "execution_count": 44,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2194,7 +2194,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 57,
+   "execution_count": 45,
    "metadata": {
     "collapsed": false
    },
@@ -2278,7 +2278,7 @@
        "6   NaN  NaN     NaN   NaN"
       ]
      },
-     "execution_count": 57,
+     "execution_count": 45,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2304,7 +2304,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 58,
+   "execution_count": 46,
    "metadata": {
     "collapsed": false
    },
@@ -2372,7 +2372,7 @@
        "6   NaN  NaN     NaN   NaN"
       ]
      },
-     "execution_count": 58,
+     "execution_count": 46,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2391,7 +2391,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 59,
+   "execution_count": 47,
    "metadata": {
     "collapsed": false
    },
@@ -2453,7 +2453,7 @@
        "6   NaN  NaN   NaN"
       ]
      },
-     "execution_count": 59,
+     "execution_count": 47,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2479,7 +2479,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 60,
+   "execution_count": 48,
    "metadata": {
     "collapsed": false
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@@ -2495,7 +2495,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 60,
+     "execution_count": 48,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2513,7 +2513,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 61,
+   "execution_count": 49,
    "metadata": {
     "collapsed": false
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@@ -2524,7 +2524,7 @@
        "True"
       ]
      },
-     "execution_count": 61,
+     "execution_count": 49,
      "metadata": {},
      "output_type": "execute_result"
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@@ -2542,7 +2542,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 62,
+   "execution_count": 50,
    "metadata": {
     "collapsed": false
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@@ -2556,7 +2556,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 62,
+     "execution_count": 50,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2574,7 +2574,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 63,
+   "execution_count": 51,
    "metadata": {
     "collapsed": false
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@@ -2588,7 +2588,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 63,
+     "execution_count": 51,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2606,7 +2606,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 64,
+   "execution_count": 52,
    "metadata": {
     "collapsed": false
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@@ -2620,7 +2620,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 64,
+     "execution_count": 52,
      "metadata": {},
      "output_type": "execute_result"
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@@ -2638,7 +2638,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 65,
+   "execution_count": 53,
    "metadata": {
     "collapsed": false
    },
@@ -2651,7 +2651,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 65,
+     "execution_count": 53,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2669,7 +2669,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 66,
+   "execution_count": 54,
    "metadata": {
     "collapsed": false
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@@ -2685,7 +2685,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 66,
+     "execution_count": 54,
      "metadata": {},
      "output_type": "execute_result"
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@@ -2704,7 +2704,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 67,
+   "execution_count": 55,
    "metadata": {
     "collapsed": false
    },
@@ -2788,7 +2788,7 @@
        "6   NaN  NaN     NaN   NaN"
       ]
      },
-     "execution_count": 67,
+     "execution_count": 55,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2806,7 +2806,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 68,
+   "execution_count": 56,
    "metadata": {
     "collapsed": false
    },
@@ -2874,7 +2874,7 @@
        "6  NaN     NaN"
       ]
      },
-     "execution_count": 68,
+     "execution_count": 56,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2892,7 +2892,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 69,
+   "execution_count": 57,
    "metadata": {
     "collapsed": false
    },
@@ -2936,7 +2936,7 @@
        "1    VA  5.1     NaN  2013"
       ]
      },
-     "execution_count": 69,
+     "execution_count": 57,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2954,7 +2954,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 70,
+   "execution_count": 58,
    "metadata": {
     "collapsed": false
    },
@@ -2998,7 +2998,7 @@
        "2    VA  5.2       6  2014"
       ]
      },
-     "execution_count": 70,
+     "execution_count": 58,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3016,7 +3016,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 71,
+   "execution_count": 59,
    "metadata": {
     "collapsed": false
    },
@@ -3100,7 +3100,7 @@
        "6  True  False  False  False"
       ]
      },
-     "execution_count": 71,
+     "execution_count": 59,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3118,7 +3118,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 72,
+   "execution_count": 60,
    "metadata": {
     "collapsed": false
    },
@@ -3202,7 +3202,7 @@
        "6   NaN  NaN     NaN   NaN"
       ]
      },
-     "execution_count": 72,
+     "execution_count": 60,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3220,7 +3220,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 73,
+   "execution_count": 61,
    "metadata": {
     "collapsed": false
    },
@@ -3264,7 +3264,7 @@
        "3    MD  4.0       6  2014"
       ]
      },
-     "execution_count": 73,
+     "execution_count": 61,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3282,7 +3282,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 74,
+   "execution_count": 62,
    "metadata": {
     "collapsed": false
    },
@@ -3296,7 +3296,7 @@
        "Name: pop, dtype: float64"
       ]
      },
-     "execution_count": 74,
+     "execution_count": 62,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3314,7 +3314,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 75,
+   "execution_count": 63,
    "metadata": {
     "collapsed": false
    },
@@ -3366,7 +3366,7 @@
        "4    MD  4.1     6.1  2015"
       ]
      },
-     "execution_count": 75,
+     "execution_count": 63,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3391,7 +3391,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 76,
+   "execution_count": 64,
    "metadata": {
     "collapsed": false
    },
@@ -3407,7 +3407,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 76,
+     "execution_count": 64,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3421,7 +3421,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 77,
+   "execution_count": 65,
    "metadata": {
     "collapsed": false
    },
@@ -3437,7 +3437,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 77,
+     "execution_count": 65,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3451,7 +3451,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 78,
+   "execution_count": 66,
    "metadata": {
     "collapsed": false
    },
@@ -3469,7 +3469,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 78,
+     "execution_count": 66,
      "metadata": {},
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     }
@@ -3487,7 +3487,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 79,
+   "execution_count": 67,
    "metadata": {
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    },
@@ -3505,7 +3505,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 79,
+     "execution_count": 67,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3523,7 +3523,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 80,
+   "execution_count": 68,
    "metadata": {
     "collapsed": false
    },
@@ -3571,7 +3571,7 @@
        "2  0.437587  0.891773  0.963663"
       ]
      },
-     "execution_count": 80,
+     "execution_count": 68,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3585,7 +3585,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 81,
+   "execution_count": 69,
    "metadata": {
     "collapsed": false
    },
@@ -3633,7 +3633,7 @@
        "2  0.186260  0.345561  0.396767"
       ]
      },
-     "execution_count": 81,
+     "execution_count": 69,
      "metadata": {},
      "output_type": "execute_result"
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@@ -3647,7 +3647,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 82,
+   "execution_count": 70,
    "metadata": {
     "collapsed": false
    },
@@ -3699,7 +3699,7 @@
        "2 NaN  1.078033  1.309223 NaN"
       ]
      },
-     "execution_count": 82,
+     "execution_count": 70,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3717,7 +3717,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 83,
+   "execution_count": 71,
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    },
@@ -3769,7 +3769,7 @@
        "2  0.437587  1.078033  1.309223  0.396767"
       ]
      },
-     "execution_count": 83,
+     "execution_count": 71,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3790,7 +3790,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 84,
+   "execution_count": 72,
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    },
@@ -3842,7 +3842,7 @@
        "2 -0.111226 -0.054178 -0.013864  0.396653"
       ]
      },
-     "execution_count": 84,
+     "execution_count": 72,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3862,7 +3862,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 85,
+   "execution_count": 73,
    "metadata": {
     "collapsed": false
    },
@@ -3876,7 +3876,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 85,
+     "execution_count": 73,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3888,7 +3888,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 86,
+   "execution_count": 74,
    "metadata": {
     "collapsed": false
    },
@@ -3944,7 +3944,7 @@
        "2 -0.111226 NaN NaN -0.603347 NaN"
       ]
      },
-     "execution_count": 86,
+     "execution_count": 74,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -3962,7 +3962,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 87,
+   "execution_count": 75,
    "metadata": {
     "collapsed": false
    },
@@ -4014,7 +4014,7 @@
        "2  0.437587  1.078033  1.309223  0.396767"
       ]
      },
-     "execution_count": 87,
+     "execution_count": 75,
      "metadata": {},
      "output_type": "execute_result"
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@@ -4025,7 +4025,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 88,
+   "execution_count": 76,
    "metadata": {
     "collapsed": false
    },
@@ -4039,7 +4039,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 88,
+     "execution_count": 76,
      "metadata": {},
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     }
@@ -4051,7 +4051,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 89,
+   "execution_count": 77,
    "metadata": {
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    },
@@ -4103,7 +4103,7 @@
        "2 -299.562413 -298.921967 -298.690777 -299.603233"
       ]
      },
-     "execution_count": 89,
+     "execution_count": 77,
      "metadata": {},
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@@ -4128,7 +4128,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 90,
+   "execution_count": 78,
    "metadata": {
     "collapsed": false
    },
@@ -4180,7 +4180,7 @@
        "2  0.111226  0.054178  0.013864  0.396653"
       ]
      },
-     "execution_count": 90,
+     "execution_count": 78,
      "metadata": {},
      "output_type": "execute_result"
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@@ -4199,7 +4199,7 @@
   },
   {
    "cell_type": "code",
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+   "execution_count": 79,
    "metadata": {
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@@ -4214,7 +4214,7 @@
        "dtype: float64"
       ]
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-     "execution_count": 91,
+     "execution_count": 79,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4233,7 +4233,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 92,
+   "execution_count": 80,
    "metadata": {
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@@ -4247,7 +4247,7 @@
        "dtype: float64"
       ]
      },
-     "execution_count": 92,
+     "execution_count": 80,
      "metadata": {},
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@@ -4265,7 +4265,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 93,
+   "execution_count": 81,
    "metadata": {
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    },
@@ -4309,7 +4309,7 @@
        "max  0.111226  0.406224  0.530438  0.396653"
       ]
      },
-     "execution_count": 93,
+     "execution_count": 81,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4328,7 +4328,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 94,
+   "execution_count": 82,
    "metadata": {
     "collapsed": false
    },
@@ -4380,7 +4380,7 @@
        "2  0.11  0.05  0.01  0.40"
       ]
      },
-     "execution_count": 94,
+     "execution_count": 82,
      "metadata": {},
      "output_type": "execute_result"
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@@ -4399,7 +4399,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 95,
+   "execution_count": 83,
    "metadata": {
     "collapsed": false
    },
@@ -4413,7 +4413,7 @@
        "Name: a, dtype: object"
       ]
      },
-     "execution_count": 95,
+     "execution_count": 83,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4431,7 +4431,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 96,
+   "execution_count": 84,
    "metadata": {
     "collapsed": false
    },
@@ -4446,7 +4446,7 @@
        "Name: foobarbazqux, dtype: float64"
       ]
      },
-     "execution_count": 96,
+     "execution_count": 84,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4464,7 +4464,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 97,
+   "execution_count": 85,
    "metadata": {
     "collapsed": false
    },
@@ -4479,7 +4479,7 @@
        "Name: foobarbazqux, dtype: float64"
       ]
      },
-     "execution_count": 97,
+     "execution_count": 85,
      "metadata": {},
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@@ -4497,7 +4497,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 134,
+   "execution_count": 86,
    "metadata": {
     "collapsed": false
    },
@@ -4512,7 +4512,7 @@
        "Name: foobarbazqux, dtype: float64"
       ]
      },
-     "execution_count": 134,
+     "execution_count": 86,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4523,7 +4523,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 99,
+   "execution_count": 87,
    "metadata": {
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    },
@@ -4575,7 +4575,7 @@
        "two    8  9  10  11"
       ]
      },
-     "execution_count": 99,
+     "execution_count": 87,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4596,7 +4596,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 100,
+   "execution_count": 88,
    "metadata": {
     "collapsed": false
    },
@@ -4648,7 +4648,7 @@
        "two    8  9  10  11"
       ]
      },
-     "execution_count": 100,
+     "execution_count": 88,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4666,7 +4666,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 101,
+   "execution_count": 89,
    "metadata": {
     "collapsed": false
    },
@@ -4718,7 +4718,7 @@
        "two    11  8  10  9"
       ]
      },
-     "execution_count": 101,
+     "execution_count": 89,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4736,7 +4736,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 133,
+   "execution_count": 90,
    "metadata": {
     "collapsed": false
    },
@@ -4788,7 +4788,7 @@
        "two    8  9  10  11"
       ]
      },
-     "execution_count": 133,
+     "execution_count": 90,
      "metadata": {},
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@@ -4806,7 +4806,7 @@
   },
   {
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-   "execution_count": 132,
+   "execution_count": 91,
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@@ -4825,7 +4825,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 132,
+     "execution_count": 91,
      "metadata": {},
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@@ -4838,7 +4838,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 104,
+   "execution_count": 92,
    "metadata": {
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@@ -4857,7 +4857,7 @@
        "dtype: float64"
       ]
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-     "execution_count": 104,
+     "execution_count": 92,
      "metadata": {},
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@@ -4875,7 +4875,7 @@
   },
   {
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-   "execution_count": 105,
+   "execution_count": 93,
    "metadata": {
     "collapsed": false
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@@ -4894,7 +4894,7 @@
        "dtype: float64"
       ]
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-     "execution_count": 105,
+     "execution_count": 93,
      "metadata": {},
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@@ -4912,7 +4912,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 106,
+   "execution_count": 94,
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@@ -4931,7 +4931,7 @@
        "dtype: float64"
       ]
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-     "execution_count": 106,
+     "execution_count": 94,
      "metadata": {},
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@@ -4949,7 +4949,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 107,
+   "execution_count": 95,
    "metadata": {
     "collapsed": false
    },
@@ -5032,7 +5032,7 @@
        "7    8    5    7"
       ]
      },
-     "execution_count": 107,
+     "execution_count": 95,
      "metadata": {},
      "output_type": "execute_result"
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@@ -5053,7 +5053,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 108,
+   "execution_count": 96,
    "metadata": {
     "collapsed": false
    },
@@ -5136,7 +5136,7 @@
        "7  8.0  5.5  7.0"
       ]
      },
-     "execution_count": 108,
+     "execution_count": 96,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -5154,7 +5154,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 109,
+   "execution_count": 97,
    "metadata": {
     "collapsed": false
    },
@@ -5237,7 +5237,7 @@
        "7  3.0  1.0    2"
       ]
      },
-     "execution_count": 109,
+     "execution_count": 97,
      "metadata": {},
      "output_type": "execute_result"
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@@ -5262,7 +5262,7 @@
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-   "execution_count": 110,
+   "execution_count": 98,
    "metadata": {
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@@ -5278,7 +5278,7 @@
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-     "execution_count": 110,
+     "execution_count": 98,
      "metadata": {},
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     }
@@ -5290,7 +5290,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 111,
+   "execution_count": 99,
    "metadata": {
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    },
@@ -5301,7 +5301,7 @@
        "False"
       ]
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-     "execution_count": 111,
+     "execution_count": 99,
      "metadata": {},
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@@ -5319,7 +5319,7 @@
   },
   {
    "cell_type": "code",
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+   "execution_count": 100,
    "metadata": {
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@@ -5332,7 +5332,7 @@
        "dtype: int64"
       ]
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-     "execution_count": 112,
+     "execution_count": 100,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -5350,7 +5350,7 @@
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   {
    "cell_type": "code",
-   "execution_count": 113,
+   "execution_count": 101,
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    },
@@ -5418,7 +5418,7 @@
        "baz  1.141943 -1.129595 -0.850052  0.960820"
       ]
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-     "execution_count": 113,
+     "execution_count": 101,
      "metadata": {},
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@@ -5431,7 +5431,7 @@
   },
   {
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-   "execution_count": 114,
+   "execution_count": 102,
    "metadata": {
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@@ -5475,7 +5475,7 @@
        "bar  0.533811 -0.091973  1.913820  0.330797"
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-     "execution_count": 114,
+     "execution_count": 102,
      "metadata": {},
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@@ -5500,7 +5500,7 @@
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   {
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-   "execution_count": 115,
+   "execution_count": 103,
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@@ -5584,7 +5584,7 @@
        "6   NaN  NaN     NaN   NaN"
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-     "execution_count": 115,
+     "execution_count": 103,
      "metadata": {},
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@@ -5595,7 +5595,7 @@
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+   "execution_count": 104,
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@@ -5609,7 +5609,7 @@
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-     "execution_count": 116,
+     "execution_count": 104,
      "metadata": {},
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@@ -5627,7 +5627,7 @@
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+   "execution_count": 105,
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@@ -5645,7 +5645,7 @@
        "dtype: float64"
       ]
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-     "execution_count": 117,
+     "execution_count": 105,
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@@ -5663,7 +5663,7 @@
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+   "execution_count": 106,
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@@ -5681,7 +5681,7 @@
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-     "execution_count": 118,
+     "execution_count": 106,
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@@ -5702,7 +5702,7 @@
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@@ -5721,7 +5721,7 @@
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    "cell_type": "code",
-   "execution_count": 120,
+   "execution_count": 108,
    "metadata": {
     "collapsed": false
    },
@@ -5783,7 +5783,7 @@
        "4         4.1    MD  2015"
       ]
      },
-     "execution_count": 120,
+     "execution_count": 108,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -5812,7 +5812,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 121,
+   "execution_count": 109,
    "metadata": {
     "collapsed": false
    },
@@ -5874,7 +5874,7 @@
        "4         4.1        MD  2015"
       ]
      },
-     "execution_count": 121,
+     "execution_count": 109,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -5893,7 +5893,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 122,
+   "execution_count": 110,
    "metadata": {
     "collapsed": false
    },
@@ -5955,7 +5955,7 @@
        "4         4.1  MARYLAND  2015"
       ]
      },
-     "execution_count": 122,
+     "execution_count": 110,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -5981,7 +5981,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 123,
+   "execution_count": 111,
    "metadata": {
     "collapsed": false
    },
@@ -6037,7 +6037,7 @@
        "4  MARYLAND  2015"
       ]
      },
-     "execution_count": 123,
+     "execution_count": 111,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -6063,7 +6063,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 124,
+   "execution_count": 112,
    "metadata": {
     "collapsed": false
    },
@@ -6125,7 +6125,7 @@
        "4         3.1    FL  2015"
       ]
      },
-     "execution_count": 124,
+     "execution_count": 112,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -6140,7 +6140,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 125,
+   "execution_count": 113,
    "metadata": {
     "collapsed": false
    },
@@ -6237,7 +6237,7 @@
        "4         3.1        FL  2015"
       ]
      },
-     "execution_count": 125,
+     "execution_count": 113,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -6258,7 +6258,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 126,
+   "execution_count": 114,
    "metadata": {
     "collapsed": false
    },
@@ -6284,7 +6284,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 127,
+   "execution_count": 115,
    "metadata": {
     "collapsed": false
    },
@@ -6302,7 +6302,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 128,
+   "execution_count": 116,
    "metadata": {
     "collapsed": false
    },
@@ -6412,7 +6412,7 @@
        "max    168.000000  334.000000   20.700000   97.000000    9.000000   31.000000"
       ]
      },
-     "execution_count": 128,
+     "execution_count": 116,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -6430,7 +6430,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 129,
+   "execution_count": 117,
    "metadata": {
     "collapsed": false
    },
@@ -6510,7 +6510,7 @@
        "4    NaN      NaN  14.3    56      5    5"
       ]
      },
-     "execution_count": 129,
+     "execution_count": 117,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -6535,7 +6535,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 130,
+   "execution_count": 118,
    "metadata": {
     "collapsed": false
    },
@@ -6556,7 +6556,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 131,
+   "execution_count": 119,
    "metadata": {
     "collapsed": false
    },
@@ -6566,11 +6566,11 @@
      "output_type": "stream",
      "text": [
       "total 1016\r\n",
-      "-rw-r--r--   1 gam  staff  437903 Feb 15 07:16 churn.csv\r\n",
-      "-rwxr-xr-x   1 gam  staff   72050 Feb 15 07:16 \u001b[31mconfusion_matrix.png\u001b[m\u001b[m\r\n",
-      "-rw-r--r--   1 gam  staff    2902 Feb 15 07:16 ozone.csv\r\n",
-      "-rw-r--r--   1 gam  staff    3324 Mar  4 17:53 ozone_copy.csv\r\n",
-      "drwxr-xr-x  10 gam  staff     340 Feb 15 07:16 \u001b[1m\u001b[36mtitanic\u001b[m\u001b[m\r\n"
+      "-rw-r--r--   1 donnemartin  staff  437903 Jul  7  2015 churn.csv\r\n",
+      "-rwxr-xr-x   1 donnemartin  staff   72050 Jul  7  2015 \u001b[31mconfusion_matrix.png\u001b[m\u001b[m\r\n",
+      "-rw-r--r--   1 donnemartin  staff    2902 Jul  7  2015 ozone.csv\r\n",
+      "-rw-r--r--   1 donnemartin  staff    3324 Apr  1 07:18 ozone_copy.csv\r\n",
+      "drwxr-xr-x  10 donnemartin  staff     340 Jul  7  2015 \u001b[34mtitanic\u001b[m\u001b[m\r\n"
      ]
     }
    ],
@@ -6595,7 +6595,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.1"
+   "version": "3.4.3"
   }
  },
  "nbformat": 4,