Frequencies for minute variable in person dataset :

     minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        163       15.13       15.13
          1 |          2        0.19       15.32
          3 |          2        0.19       15.51
          5 |         17        1.58       17.08
          7 |          4        0.37       17.46
          8 |          4        0.37       17.83
          9 |          7        0.65       18.48
         10 |         72        6.69       25.16
         13 |          2        0.19       25.35
         15 |         93        8.64       33.98
         17 |          4        0.37       34.35
         19 |          2        0.19       34.54
         20 |         68        6.31       40.85
         21 |          2        0.19       41.04
         23 |          2        0.19       41.23
         25 |         38        3.53       44.75
         26 |          2        0.19       44.94
         27 |          2        0.19       45.13
         30 |        195       18.11       63.23
         33 |          2        0.19       63.42
         34 |          2        0.19       63.60
         35 |         38        3.53       67.13
         36 |          4        0.37       67.50
         37 |          2        0.19       67.69
         38 |          3        0.28       67.97
         39 |          3        0.28       68.25
         40 |        108       10.03       78.27
         41 |          3        0.28       78.55
         42 |          3        0.28       78.83
         43 |          3        0.28       79.11
         45 |         90        8.36       87.47
         48 |          2        0.19       87.65
         49 |          3        0.28       87.93
         50 |         92        8.54       96.47
         51 |          2        0.19       96.66
         52 |          2        0.19       96.84
         53 |          3        0.28       97.12
         54 |          4        0.37       97.49
         55 |         19        1.76       99.26
         57 |          5        0.46       99.72
         58 |          2        0.19       99.91
         59 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,077      100.00

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