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

    Arrival |
       Time |
 EMS-Minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        677        6.77        6.77
          1 |         41        0.41        7.18
          2 |         50        0.50        7.68
          3 |         43        0.43        8.11
          4 |         38        0.38        8.49
          5 |         99        0.99        9.48
          6 |         35        0.35        9.83
          7 |         48        0.48       10.31
          8 |         52        0.52       10.83
          9 |         34        0.34       11.17
         10 |        100        1.00       12.17
         11 |         44        0.44       12.61
         12 |         45        0.45       13.06
         13 |         52        0.52       13.58
         14 |         40        0.40       13.98
         15 |        125        1.25       15.23
         16 |         49        0.49       15.72
         17 |         34        0.34       16.06
         18 |         54        0.54       16.60
         19 |         35        0.35       16.95
         20 |        134        1.34       18.29
         21 |         48        0.48       18.77
         22 |         48        0.48       19.25
         23 |         37        0.37       19.62
         24 |         47        0.47       20.09
         25 |         91        0.91       21.00
         26 |         48        0.48       21.48
         27 |         46        0.46       21.94
         28 |         55        0.55       22.49
         29 |         23        0.23       22.72
         30 |        117        1.17       23.89
         31 |         40        0.40       24.29
         32 |         40        0.40       24.69
         33 |         36        0.36       25.05
         34 |         47        0.47       25.52
         35 |        107        1.07       26.59
         36 |         52        0.52       27.11
         37 |         48        0.48       27.59
         38 |         55        0.55       28.14
         39 |         43        0.43       28.57
         40 |        117        1.17       29.74
         41 |         34        0.34       30.08
         42 |         33        0.33       30.41
         43 |         37        0.37       30.78
         44 |         47        0.47       31.25
         45 |        133        1.33       32.58
         46 |         48        0.48       33.06
         47 |         42        0.42       33.48
         48 |         44        0.44       33.92
         49 |         38        0.38       34.30
         50 |         89        0.89       35.19
         51 |         38        0.38       35.57
         52 |         47        0.47       36.04
         53 |         50        0.50       36.54
         54 |         40        0.40       36.94
         55 |         80        0.80       37.74
         56 |         41        0.41       38.15
         57 |         48        0.48       38.63
         58 |         61        0.61       39.24
         59 |         43        0.43       39.67
         99 |      6,033       60.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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