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

    Arrival |
       Time |
 EMS-Minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        561        5.61        5.61
          1 |         60        0.60        6.21
          2 |         74        0.74        6.95
          3 |         67        0.67        7.62
          4 |         62        0.62        8.24
          5 |         89        0.89        9.13
          6 |         65        0.65        9.78
          7 |         79        0.79       10.57
          8 |         68        0.68       11.25
          9 |         70        0.70       11.95
         10 |        123        1.23       13.18
         11 |         69        0.69       13.87
         12 |         76        0.76       14.63
         13 |         73        0.73       15.36
         14 |         58        0.58       15.94
         15 |        145        1.45       17.39
         16 |         72        0.72       18.11
         17 |         63        0.63       18.74
         18 |         76        0.76       19.50
         19 |         49        0.49       19.99
         20 |        141        1.41       21.40
         21 |         61        0.61       22.01
         22 |         52        0.52       22.53
         23 |         60        0.60       23.13
         24 |         65        0.65       23.78
         25 |        118        1.18       24.96
         26 |         71        0.71       25.67
         27 |         67        0.67       26.34
         28 |         73        0.73       27.07
         29 |         57        0.57       27.64
         30 |        120        1.20       28.84
         31 |         60        0.60       29.44
         32 |         76        0.76       30.20
         33 |         59        0.59       30.79
         34 |         73        0.73       31.52
         35 |        110        1.10       32.62
         36 |         57        0.57       33.19
         37 |         67        0.67       33.86
         38 |         65        0.65       34.51
         39 |         63        0.63       35.14
         40 |        119        1.19       36.33
         41 |         63        0.63       36.96
         42 |         86        0.86       37.82
         43 |         69        0.69       38.51
         44 |         69        0.69       39.20
         45 |        132        1.32       40.52
         46 |         64        0.64       41.16
         47 |         64        0.64       41.80
         48 |         74        0.74       42.54
         49 |         59        0.59       43.13
         50 |        109        1.09       44.22
         51 |         57        0.57       44.79
         52 |         63        0.63       45.42
         53 |         64        0.64       46.06
         54 |         64        0.64       46.70
         55 |         98        0.98       47.68
         56 |         56        0.56       48.24
         57 |         65        0.65       48.89
         58 |         70        0.70       49.59
         59 |         61        0.61       50.20
         99 |      4,980       49.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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