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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,335       23.35       23.35
          1 |         69        0.69       24.04
          2 |         67        0.67       24.71
          3 |         41        0.41       25.12
          4 |         34        0.34       25.46
          5 |         19        0.19       25.65
          6 |         44        0.44       26.09
          7 |         57        0.57       26.66
          8 |         65        0.65       27.31
          9 |         50        0.50       27.81
         10 |         53        0.53       28.34
         11 |         64        0.64       28.98
         12 |         61        0.61       29.59
         13 |         71        0.71       30.30
         14 |         84        0.84       31.14
         15 |        103        1.03       32.17
         16 |        104        1.04       33.21
         17 |         98        0.98       34.19
         18 |         98        0.98       35.17
         19 |        101        1.01       36.18
         20 |         97        0.97       37.15
         21 |         88        0.88       38.03
         22 |         81        0.81       38.84
         23 |         63        0.63       39.47
         24 |          2        0.02       39.49
         99 |      6,051       60.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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