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

   lag_mins |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,258       32.58       32.58
          1 |         37        0.37       32.95
          2 |         25        0.25       33.20
          3 |         33        0.33       33.53
          4 |         24        0.24       33.77
          5 |         79        0.79       34.56
          6 |         27        0.27       34.83
          7 |         40        0.40       35.23
          8 |         39        0.39       35.62
          9 |         37        0.37       35.99
         10 |         91        0.91       36.90
         11 |         29        0.29       37.19
         12 |         18        0.18       37.37
         13 |         28        0.28       37.65
         14 |         24        0.24       37.89
         15 |         70        0.70       38.59
         16 |         32        0.32       38.91
         17 |         30        0.30       39.21
         18 |         30        0.30       39.51
         19 |         30        0.30       39.81
         20 |         66        0.66       40.47
         21 |         28        0.28       40.75
         22 |         27        0.27       41.02
         23 |         34        0.34       41.36
         24 |         27        0.27       41.63
         25 |         59        0.59       42.22
         26 |         33        0.33       42.55
         27 |         33        0.33       42.88
         28 |         26        0.26       43.14
         29 |         26        0.26       43.40
         30 |         66        0.66       44.06
         31 |         32        0.32       44.38
         32 |         43        0.43       44.81
         33 |         19        0.19       45.00
         34 |         28        0.28       45.28
         35 |         61        0.61       45.89
         36 |         33        0.33       46.22
         37 |         45        0.45       46.67
         38 |         31        0.31       46.98
         39 |         25        0.25       47.23
         40 |         78        0.78       48.01
         41 |         32        0.32       48.33
         42 |         28        0.28       48.61
         43 |         31        0.31       48.92
         44 |         29        0.29       49.21
         45 |         67        0.67       49.88
         46 |         25        0.25       50.13
         47 |         34        0.34       50.47
         48 |         35        0.35       50.82
         49 |         25        0.25       51.07
         50 |         61        0.61       51.68
         51 |         19        0.19       51.87
         52 |         33        0.33       52.20
         53 |         18        0.18       52.38
         54 |         19        0.19       52.57
         55 |         56        0.56       53.13
         56 |         19        0.19       53.32
         57 |         27        0.27       53.59
         58 |         39        0.39       53.98
         59 |         17        0.17       54.15
         60 |         15        0.15       54.30
         99 |      4,570       45.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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