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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,369       23.69       23.69
          1 |         32        0.32       24.01
          2 |         38        0.38       24.39
          3 |         20        0.20       24.59
          4 |         15        0.15       24.74
          5 |          8        0.08       24.82
          6 |         25        0.25       25.07
          7 |         27        0.27       25.34
          8 |         31        0.31       25.65
          9 |         21        0.21       25.86
         10 |         25        0.25       26.11
         11 |         18        0.18       26.29
         12 |         38        0.38       26.67
         13 |         24        0.24       26.91
         14 |         34        0.34       27.25
         15 |         50        0.50       27.75
         16 |         43        0.43       28.18
         17 |         44        0.44       28.62
         18 |         41        0.41       29.03
         19 |         36        0.36       29.39
         20 |         46        0.46       29.85
         21 |         43        0.43       30.28
         22 |         42        0.42       30.70
         23 |         29        0.29       30.99
         99 |      6,901       69.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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