Frequencies for lag_hrs variable in person dataset :

    lag_hrs |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        391       30.50       30.50
          1 |         15        1.17       31.67
          2 |         11        0.86       32.53
          3 |          8        0.62       33.15
          4 |          7        0.55       33.70
          5 |          6        0.47       34.17
          6 |          4        0.31       34.48
          7 |          6        0.47       34.95
          8 |          1        0.08       35.02
          9 |          2        0.16       35.18
         10 |          4        0.31       35.49
         11 |          2        0.16       35.65
         12 |          3        0.23       35.88
         14 |          1        0.08       35.96
         15 |          5        0.39       36.35
         16 |          1        0.08       36.43
         17 |          1        0.08       36.51
         18 |          2        0.16       36.66
         20 |          2        0.16       36.82
         22 |          1        0.08       36.90
         24 |          1        0.08       36.97
         25 |          1        0.08       37.05
         27 |          1        0.08       37.13
         28 |          1        0.08       37.21
         29 |          1        0.08       37.29
         31 |          1        0.08       37.36
         32 |          2        0.16       37.52
         36 |          1        0.08       37.60
         39 |          2        0.16       37.75
         41 |          1        0.08       37.83
         42 |          1        0.08       37.91
         44 |          2        0.16       38.07
         47 |          1        0.08       38.14
         48 |          1        0.08       38.22
         49 |          1        0.08       38.30
         54 |          1        0.08       38.38
         55 |          1        0.08       38.46
         57 |          1        0.08       38.53
         61 |          1        0.08       38.61
         63 |          1        0.08       38.69
         66 |          1        0.08       38.77
         69 |          1        0.08       38.85
         70 |          1        0.08       38.92
         75 |          1        0.08       39.00
         87 |          2        0.16       39.16
        102 |          1        0.08       39.24
        105 |          1        0.08       39.31
        106 |          1        0.08       39.39
        114 |          1        0.08       39.47
        115 |          1        0.08       39.55
        122 |          1        0.08       39.63
        127 |          2        0.16       39.78
        149 |          1        0.08       39.86
        154 |          1        0.08       39.94
        157 |          1        0.08       40.02
        172 |          1        0.08       40.09
        175 |          1        0.08       40.17
        179 |          1        0.08       40.25
        180 |          1        0.08       40.33
        189 |          1        0.08       40.41
        196 |          1        0.08       40.48
        201 |          1        0.08       40.56
        211 |          1        0.08       40.64
        224 |          1        0.08       40.72
        230 |          1        0.08       40.80
        233 |          1        0.08       40.87
        240 |          1        0.08       40.95
        253 |          1        0.08       41.03
        264 |          1        0.08       41.11
        268 |          1        0.08       41.19
        283 |          1        0.08       41.26
        296 |          1        0.08       41.34
        312 |          1        0.08       41.42
        318 |          1        0.08       41.50
        333 |          1        0.08       41.58
        340 |          1        0.08       41.65
        346 |          1        0.08       41.73
        353 |          1        0.08       41.81
        358 |          1        0.08       41.89
        372 |          1        0.08       41.97
        401 |          1        0.08       42.04
        403 |          1        0.08       42.12
        413 |          1        0.08       42.20
        422 |          1        0.08       42.28
        425 |          1        0.08       42.36
        427 |          1        0.08       42.43
        428 |          1        0.08       42.51
        431 |          1        0.08       42.59
        479 |          1        0.08       42.67
        489 |          1        0.08       42.75
        553 |          1        0.08       42.82
        592 |          1        0.08       42.90
        626 |          1        0.08       42.98
        642 |          1        0.08       43.06
        653 |          1        0.08       43.14
        693 |          1        0.08       43.21
        712 |          1        0.08       43.29
        999 |        727       56.71      100.00
------------+-----------------------------------
      Total |      1,282      100.00

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