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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,371       23.71       23.71
          1 |         20        0.20       23.91
          2 |         15        0.15       24.06
          3 |         10        0.10       24.16
          4 |          5        0.05       24.21
          5 |          5        0.05       24.26
          6 |          9        0.09       24.35
          7 |          4        0.04       24.39
          8 |         15        0.15       24.54
          9 |          8        0.08       24.62
         10 |          7        0.07       24.69
         11 |         21        0.21       24.90
         12 |         26        0.26       25.16
         13 |         26        0.26       25.42
         14 |         24        0.24       25.66
         15 |         29        0.29       25.95
         16 |         32        0.32       26.27
         17 |         33        0.33       26.60
         18 |         30        0.30       26.90
         19 |         26        0.26       27.16
         20 |         13        0.13       27.29
         21 |         34        0.34       27.63
         22 |         23        0.23       27.86
         23 |         12        0.12       27.98
         24 |          1        0.01       27.99
         99 |      7,201       72.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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