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

        day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        393        3.93        3.93
          2 |        351        3.51        7.44
          3 |        352        3.52       10.96
          4 |        382        3.82       14.78
          5 |        344        3.44       18.22
          6 |        296        2.96       21.18
          7 |        397        3.97       25.15
          8 |        397        3.97       29.12
          9 |        262        2.62       31.74
         10 |        369        3.69       35.43
         11 |        343        3.43       38.86
         12 |        299        2.99       41.85
         13 |        285        2.85       44.70
         14 |        328        3.28       47.98
         15 |        345        3.45       51.43
         16 |        338        3.38       54.81
         17 |        332        3.32       58.13
         18 |        305        3.05       61.18
         19 |        308        3.08       64.26
         20 |        372        3.72       67.98
         21 |        335        3.35       71.33
         22 |        280        2.80       74.13
         23 |        324        3.24       77.37
         24 |        309        3.09       80.46
         25 |        360        3.60       84.06
         26 |        355        3.55       87.61
         27 |        348        3.48       91.09
         28 |        276        2.76       93.85
         29 |        244        2.44       96.29
         30 |        232        2.32       98.61
         31 |        139        1.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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