Frequencies for first 10,000 rows of hosp_hr variable in accident dataset :

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,430       24.30       24.30
          1 |         46        0.46       24.76
          2 |         47        0.47       25.23
          3 |         32        0.32       25.55
          4 |         19        0.19       25.74
          5 |         25        0.25       25.99
          6 |         25        0.25       26.24
          7 |         46        0.46       26.70
          8 |         53        0.53       27.23
          9 |         42        0.42       27.65
         10 |         40        0.40       28.05
         11 |         49        0.49       28.54
         12 |         61        0.61       29.15
         13 |         63        0.63       29.78
         14 |         66        0.66       30.44
         15 |         79        0.79       31.23
         16 |         74        0.74       31.97
         17 |         95        0.95       32.92
         18 |         80        0.80       33.72
         19 |         78        0.78       34.50
         20 |         61        0.61       35.11
         21 |         67        0.67       35.78
         22 |         63        0.63       36.41
         23 |         55        0.55       36.96
         24 |          1        0.01       36.97
         99 |      6,303       63.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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