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

Notificatio |
     n Time |
   EMS-Hour |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        792        7.92        7.92
          1 |        116        1.16        9.08
          2 |        102        1.02       10.10
          3 |         43        0.43       10.53
          4 |         39        0.39       10.92
          5 |         28        0.28       11.20
          6 |         39        0.39       11.59
          7 |         69        0.69       12.28
          8 |         40        0.40       12.68
          9 |         52        0.52       13.20
         10 |         45        0.45       13.65
         11 |         49        0.49       14.14
         12 |         60        0.60       14.74
         13 |         79        0.79       15.53
         14 |         68        0.68       16.21
         15 |        112        1.12       17.33
         16 |        119        1.19       18.52
         17 |        110        1.10       19.62
         18 |        131        1.31       20.93
         19 |        118        1.18       22.11
         20 |        112        1.12       23.23
         21 |        102        1.02       24.25
         22 |         95        0.95       25.20
         23 |        111        1.11       26.31
         99 |      7,369       73.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016