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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,494       24.94       24.94
          1 |         41        0.41       25.35
          2 |         37        0.37       25.72
          3 |         26        0.26       25.98
          4 |         22        0.22       26.20
          5 |         15        0.15       26.35
          6 |         25        0.25       26.60
          7 |         26        0.26       26.86
          8 |         40        0.40       27.26
          9 |         33        0.33       27.59
         10 |         37        0.37       27.96
         11 |         28        0.28       28.24
         12 |         34        0.34       28.58
         13 |         35        0.35       28.93
         14 |         44        0.44       29.37
         15 |         48        0.48       29.85
         16 |         56        0.56       30.41
         17 |         50        0.50       30.91
         18 |         66        0.66       31.57
         19 |         58        0.58       32.15
         20 |         34        0.34       32.49
         21 |         49        0.49       32.98
         22 |         45        0.45       33.43
         23 |         38        0.38       33.81
         99 |      6,619       66.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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