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

        day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        418        4.18        4.18
          2 |        342        3.42        7.60
          3 |        429        4.29       11.89
          4 |        368        3.68       15.57
          5 |        374        3.74       19.31
          6 |        358        3.58       22.89
          7 |        299        2.99       25.88
          8 |        329        3.29       29.17
          9 |        410        4.10       33.27
         10 |        351        3.51       36.78
         11 |        236        2.36       39.14
         12 |        284        2.84       41.98
         13 |        378        3.78       45.76
         14 |        342        3.42       49.18
         15 |        338        3.38       52.56
         16 |        368        3.68       56.24
         17 |        269        2.69       58.93
         18 |        322        3.22       62.15
         19 |        314        3.14       65.29
         20 |        343        3.43       68.72
         21 |        259        2.59       71.31
         22 |        256        2.56       73.87
         23 |        311        3.11       76.98
         24 |        295        2.95       79.93
         25 |        284        2.84       82.77
         26 |        308        3.08       85.85
         27 |        404        4.04       89.89
         28 |        319        3.19       93.08
         29 |        229        2.29       95.37
         30 |        313        3.13       98.50
         31 |        150        1.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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