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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,231       22.31       22.31
          1 |         14        0.14       22.45
          2 |         13        0.13       22.58
          3 |         13        0.13       22.71
          4 |          5        0.05       22.76
          5 |          2        0.02       22.78
          6 |         10        0.10       22.88
          7 |         12        0.12       23.00
          8 |         15        0.15       23.15
          9 |         10        0.10       23.25
         10 |         10        0.10       23.35
         11 |          8        0.08       23.43
         12 |         16        0.16       23.59
         13 |         14        0.14       23.73
         14 |         17        0.17       23.90
         15 |         20        0.20       24.10
         16 |         16        0.16       24.26
         17 |         25        0.25       24.51
         18 |         32        0.32       24.83
         19 |         22        0.22       25.05
         20 |         19        0.19       25.24
         21 |         18        0.18       25.42
         22 |         16        0.16       25.58
         23 |         15        0.15       25.73
         99 |      7,427       74.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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