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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,357       23.57       23.57
          1 |         39        0.39       23.96
          2 |         46        0.46       24.42
          3 |         27        0.27       24.69
          4 |         19        0.19       24.88
          5 |         12        0.12       25.00
          6 |         23        0.23       25.23
          7 |         45        0.45       25.68
          8 |         40        0.40       26.08
          9 |         32        0.32       26.40
         10 |         41        0.41       26.81
         11 |         43        0.43       27.24
         12 |         48        0.48       27.72
         13 |         48        0.48       28.20
         14 |         50        0.50       28.70
         15 |         52        0.52       29.22
         16 |         64        0.64       29.86
         17 |         71        0.71       30.57
         18 |         81        0.81       31.38
         19 |         82        0.82       32.20
         20 |         64        0.64       32.84
         21 |         62        0.62       33.46
         22 |         52        0.52       33.98
         23 |         47        0.47       34.45
         24 |          2        0.02       34.47
         99 |      6,553       65.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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