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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,313       23.13       23.13
          1 |         66        0.66       23.79
          2 |         70        0.70       24.49
          3 |         40        0.40       24.89
          4 |         37        0.37       25.26
          5 |         20        0.20       25.46
          6 |         35        0.35       25.81
          7 |         56        0.56       26.37
          8 |         49        0.49       26.86
          9 |         45        0.45       27.31
         10 |         43        0.43       27.74
         11 |         55        0.55       28.29
         12 |         68        0.68       28.97
         13 |         51        0.51       29.48
         14 |         64        0.64       30.12
         15 |         89        0.89       31.01
         16 |         93        0.93       31.94
         17 |        106        1.06       33.00
         18 |         86        0.86       33.86
         19 |        105        1.05       34.91
         20 |         72        0.72       35.63
         21 |         86        0.86       36.49
         22 |         82        0.82       37.31
         23 |         64        0.64       37.95
         24 |          1        0.01       37.96
         99 |      6,204       62.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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