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

    Arrival |
       Time |
 EMS-Minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        801        8.01        8.01
          1 |         28        0.28        8.29
          2 |         29        0.29        8.58
          3 |         27        0.27        8.85
          4 |         28        0.28        9.13
          5 |        107        1.07       10.20
          6 |         29        0.29       10.49
          7 |         37        0.37       10.86
          8 |         36        0.36       11.22
          9 |         20        0.20       11.42
         10 |        108        1.08       12.50
         11 |         26        0.26       12.76
         12 |         35        0.35       13.11
         13 |         30        0.30       13.41
         14 |         28        0.28       13.69
         15 |        140        1.40       15.09
         16 |         25        0.25       15.34
         17 |         35        0.35       15.69
         18 |         37        0.37       16.06
         19 |         29        0.29       16.35
         20 |        130        1.30       17.65
         21 |         25        0.25       17.90
         22 |         26        0.26       18.16
         23 |         30        0.30       18.46
         24 |         28        0.28       18.74
         25 |        118        1.18       19.92
         26 |         20        0.20       20.12
         27 |         30        0.30       20.42
         28 |         39        0.39       20.81
         29 |         18        0.18       20.99
         30 |        134        1.34       22.33
         31 |         31        0.31       22.64
         32 |         22        0.22       22.86
         33 |         27        0.27       23.13
         34 |         23        0.23       23.36
         35 |        115        1.15       24.51
         36 |         15        0.15       24.66
         37 |         30        0.30       24.96
         38 |         22        0.22       25.18
         39 |         13        0.13       25.31
         40 |        125        1.25       26.56
         41 |         23        0.23       26.79
         42 |         28        0.28       27.07
         43 |         26        0.26       27.33
         44 |         23        0.23       27.56
         45 |        138        1.38       28.94
         46 |         30        0.30       29.24
         47 |         31        0.31       29.55
         48 |         34        0.34       29.89
         49 |         33        0.33       30.22
         50 |        136        1.36       31.58
         51 |         29        0.29       31.87
         52 |         29        0.29       32.16
         53 |         29        0.29       32.45
         54 |         22        0.22       32.67
         55 |        125        1.25       33.92
         56 |         17        0.17       34.09
         57 |         30        0.30       34.39
         58 |         34        0.34       34.73
         59 |         32        0.32       35.05
         99 |      6,495       64.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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