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

   lag_mins |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,086       20.86       20.86
          1 |         27        0.27       21.13
          2 |         31        0.31       21.44
          3 |         29        0.29       21.73
          4 |         17        0.17       21.90
          5 |         67        0.67       22.57
          6 |         18        0.18       22.75
          7 |         26        0.26       23.01
          8 |         20        0.20       23.21
          9 |         26        0.26       23.47
         10 |         56        0.56       24.03
         11 |         24        0.24       24.27
         12 |         20        0.20       24.47
         13 |         27        0.27       24.74
         14 |         20        0.20       24.94
         15 |         62        0.62       25.56
         16 |         16        0.16       25.72
         17 |         27        0.27       25.99
         18 |         20        0.20       26.19
         19 |         18        0.18       26.37
         20 |         62        0.62       26.99
         21 |         21        0.21       27.20
         22 |         20        0.20       27.40
         23 |         30        0.30       27.70
         24 |         12        0.12       27.82
         25 |         48        0.48       28.30
         26 |         23        0.23       28.53
         27 |         33        0.33       28.86
         28 |         29        0.29       29.15
         29 |         24        0.24       29.39
         30 |         56        0.56       29.95
         31 |         20        0.20       30.15
         32 |         26        0.26       30.41
         33 |         23        0.23       30.64
         34 |         27        0.27       30.91
         35 |         70        0.70       31.61
         36 |         26        0.26       31.87
         37 |         24        0.24       32.11
         38 |         19        0.19       32.30
         39 |         18        0.18       32.48
         40 |         62        0.62       33.10
         41 |         18        0.18       33.28
         42 |         17        0.17       33.45
         43 |         20        0.20       33.65
         44 |         25        0.25       33.90
         45 |         60        0.60       34.50
         46 |         24        0.24       34.74
         47 |         23        0.23       34.97
         48 |         34        0.34       35.31
         49 |         22        0.22       35.53
         50 |         54        0.54       36.07
         51 |         25        0.25       36.32
         52 |         22        0.22       36.54
         53 |         26        0.26       36.80
         54 |         19        0.19       36.99
         55 |         61        0.61       37.60
         56 |         23        0.23       37.83
         57 |         17        0.17       38.00
         58 |         15        0.15       38.15
         59 |         17        0.17       38.32
         99 |        173        1.73       40.05
          . |      5,995       59.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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