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

    hosp_hr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,450       24.50       24.50
          1 |         42        0.42       24.92
          2 |         45        0.45       25.37
          3 |         45        0.45       25.82
          4 |         28        0.28       26.10
          5 |         22        0.22       26.32
          6 |         23        0.23       26.55
          7 |         39        0.39       26.94
          8 |         62        0.62       27.56
          9 |         44        0.44       28.00
         10 |         38        0.38       28.38
         11 |         36        0.36       28.74
         12 |         51        0.51       29.25
         13 |         54        0.54       29.79
         14 |         60        0.60       30.39
         15 |         74        0.74       31.13
         16 |         90        0.90       32.03
         17 |         70        0.70       32.73
         18 |         91        0.91       33.64
         19 |         85        0.85       34.49
         20 |         72        0.72       35.21
         21 |         74        0.74       35.95
         22 |         60        0.60       36.55
         23 |         40        0.40       36.95
         24 |          1        0.01       36.96
         99 |      6,304       63.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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