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

        day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        364        3.64        3.64
          2 |        343        3.43        7.07
          3 |        440        4.40       11.47
          4 |        346        3.46       14.93
          5 |        404        4.04       18.97
          6 |        384        3.84       22.81
          7 |        445        4.45       27.26
          8 |        281        2.81       30.07
          9 |        418        4.18       34.25
         10 |        314        3.14       37.39
         11 |        385        3.85       41.24
         12 |        272        2.72       43.96
         13 |        350        3.50       47.46
         14 |        303        3.03       50.49
         15 |        297        2.97       53.46
         16 |        276        2.76       56.22
         17 |        317        3.17       59.39
         18 |        290        2.90       62.29
         19 |        340        3.40       65.69
         20 |        275        2.75       68.44
         21 |        309        3.09       71.53
         22 |        353        3.53       75.06
         23 |        273        2.73       77.79
         24 |        376        3.76       81.55
         25 |        363        3.63       85.18
         26 |        320        3.20       88.38
         27 |        309        3.09       91.47
         28 |        238        2.38       93.85
         29 |        206        2.06       95.91
         30 |        187        1.87       97.78
         31 |        215        2.15       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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