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

   lag_mins |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,514       15.14       15.14
          1 |         34        0.34       15.48
          2 |         34        0.34       15.82
          3 |         35        0.35       16.17
          4 |         34        0.34       16.51
          5 |        100        1.00       17.51
          6 |         35        0.35       17.86
          7 |         36        0.36       18.22
          8 |         42        0.42       18.64
          9 |         20        0.20       18.84
         10 |         67        0.67       19.51
         11 |         28        0.28       19.79
         12 |         33        0.33       20.12
         13 |         19        0.19       20.31
         14 |         28        0.28       20.59
         15 |         93        0.93       21.52
         16 |         34        0.34       21.86
         17 |         31        0.31       22.17
         18 |         25        0.25       22.42
         19 |         20        0.20       22.62
         20 |         74        0.74       23.36
         21 |         28        0.28       23.64
         22 |         34        0.34       23.98
         23 |         18        0.18       24.16
         24 |         26        0.26       24.42
         25 |         56        0.56       24.98
         26 |         29        0.29       25.27
         27 |         27        0.27       25.54
         28 |         26        0.26       25.80
         29 |         32        0.32       26.12
         30 |         78        0.78       26.90
         31 |         27        0.27       27.17
         32 |         32        0.32       27.49
         33 |         24        0.24       27.73
         34 |         28        0.28       28.01
         35 |         41        0.41       28.42
         36 |         26        0.26       28.68
         37 |         37        0.37       29.05
         38 |         28        0.28       29.33
         39 |         25        0.25       29.58
         40 |         57        0.57       30.15
         41 |         22        0.22       30.37
         42 |         36        0.36       30.73
         43 |         24        0.24       30.97
         44 |         22        0.22       31.19
         45 |         73        0.73       31.92
         46 |         25        0.25       32.17
         47 |         28        0.28       32.45
         48 |         25        0.25       32.70
         49 |         23        0.23       32.93
         50 |         57        0.57       33.50
         51 |         26        0.26       33.76
         52 |         30        0.30       34.06
         53 |         31        0.31       34.37
         54 |         22        0.22       34.59
         55 |         54        0.54       35.13
         56 |         26        0.26       35.39
         57 |         25        0.25       35.64
         58 |         24        0.24       35.88
         59 |         22        0.22       36.10
         99 |      6,390       63.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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