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

    Arrival |
       Time |
 EMS-Minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        692        6.92        6.92
          1 |         57        0.57        7.49
          2 |         54        0.54        8.03
          3 |         50        0.50        8.53
          4 |         64        0.64        9.17
          5 |        110        1.10       10.27
          6 |         57        0.57       10.84
          7 |         70        0.70       11.54
          8 |         62        0.62       12.16
          9 |         63        0.63       12.79
         10 |        116        1.16       13.95
         11 |         68        0.68       14.63
         12 |         56        0.56       15.19
         13 |         68        0.68       15.87
         14 |         57        0.57       16.44
         15 |        120        1.20       17.64
         16 |         56        0.56       18.20
         17 |         69        0.69       18.89
         18 |         71        0.71       19.60
         19 |         60        0.60       20.20
         20 |        144        1.44       21.64
         21 |         55        0.55       22.19
         22 |         72        0.72       22.91
         23 |         68        0.68       23.59
         24 |         53        0.53       24.12
         25 |        110        1.10       25.22
         26 |         70        0.70       25.92
         27 |         56        0.56       26.48
         28 |         68        0.68       27.16
         29 |         64        0.64       27.80
         30 |        117        1.17       28.97
         31 |         52        0.52       29.49
         32 |         58        0.58       30.07
         33 |         53        0.53       30.60
         34 |         56        0.56       31.16
         35 |        108        1.08       32.24
         36 |         69        0.69       32.93
         37 |         57        0.57       33.50
         38 |         64        0.64       34.14
         39 |         63        0.63       34.77
         40 |        103        1.03       35.80
         41 |         64        0.64       36.44
         42 |         74        0.74       37.18
         43 |         53        0.53       37.71
         44 |         66        0.66       38.37
         45 |        118        1.18       39.55
         46 |         54        0.54       40.09
         47 |         77        0.77       40.86
         48 |         56        0.56       41.42
         49 |         59        0.59       42.01
         50 |        117        1.17       43.18
         51 |         65        0.65       43.83
         52 |         71        0.71       44.54
         53 |         65        0.65       45.19
         54 |         63        0.63       45.82
         55 |        109        1.09       46.91
         56 |         81        0.81       47.72
         57 |         66        0.66       48.38
         58 |         64        0.64       49.02
         59 |         69        0.69       49.71
         99 |      5,029       50.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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