Frequencies for first 10,000 rows of day variable in person dataset :

        day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        388        3.88        3.88
          2 |        358        3.58        7.46
          3 |        348        3.48       10.94
          4 |        316        3.16       14.10
          5 |        346        3.46       17.56
          6 |        400        4.00       21.56
          7 |        382        3.82       25.38
          8 |        310        3.10       28.48
          9 |        357        3.57       32.05
         10 |        343        3.43       35.48
         11 |        353        3.53       39.01
         12 |        272        2.72       41.73
         13 |        309        3.09       44.82
         14 |        297        2.97       47.79
         15 |        307        3.07       50.86
         16 |        370        3.70       54.56
         17 |        361        3.61       58.17
         18 |        342        3.42       61.59
         19 |        324        3.24       64.83
         20 |        367        3.67       68.50
         21 |        307        3.07       71.57
         22 |        219        2.19       73.76
         23 |        304        3.04       76.80
         24 |        347        3.47       80.27
         25 |        319        3.19       83.46
         26 |        283        2.83       86.29
         27 |        353        3.53       89.82
         28 |        309        3.09       92.91
         29 |        224        2.24       95.15
         30 |        270        2.70       97.85
         31 |        215        2.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016