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

    arrival |
   time ems |
      (min) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         86        0.86        0.86
          1 |         49        0.49        1.35
          2 |         51        0.51        1.86
          3 |         43        0.43        2.29
          4 |         63        0.63        2.92
          5 |         71        0.71        3.63
          6 |         49        0.49        4.12
          7 |         55        0.55        4.67
          8 |         50        0.50        5.17
          9 |         44        0.44        5.61
         10 |         72        0.72        6.33
         11 |         45        0.45        6.78
         12 |         64        0.64        7.42
         13 |         38        0.38        7.80
         14 |         43        0.43        8.23
         15 |         83        0.83        9.06
         16 |         43        0.43        9.49
         17 |         51        0.51       10.00
         18 |         54        0.54       10.54
         19 |         46        0.46       11.00
         20 |         77        0.77       11.77
         21 |         40        0.40       12.17
         22 |         45        0.45       12.62
         23 |         35        0.35       12.97
         24 |         54        0.54       13.51
         25 |         66        0.66       14.17
         26 |         56        0.56       14.73
         27 |         58        0.58       15.31
         28 |         47        0.47       15.78
         29 |         46        0.46       16.24
         30 |         88        0.88       17.12
         31 |         55        0.55       17.67
         32 |         43        0.43       18.10
         33 |         39        0.39       18.49
         34 |         55        0.55       19.04
         35 |         77        0.77       19.81
         36 |         42        0.42       20.23
         37 |         55        0.55       20.78
         38 |         54        0.54       21.32
         39 |         52        0.52       21.84
         40 |         85        0.85       22.69
         41 |         39        0.39       23.08
         42 |         50        0.50       23.58
         43 |         61        0.61       24.19
         44 |         51        0.51       24.70
         45 |         74        0.74       25.44
         46 |         45        0.45       25.89
         47 |         53        0.53       26.42
         48 |         48        0.48       26.90
         49 |         52        0.52       27.42
         50 |         86        0.86       28.28
         51 |         55        0.55       28.83
         52 |         47        0.47       29.30
         53 |         51        0.51       29.81
         54 |         51        0.51       30.32
         55 |         78        0.78       31.10
         56 |         52        0.52       31.62
         57 |         46        0.46       32.08
         58 |         60        0.60       32.68
         59 |         49        0.49       33.17
         88 |        408        4.08       37.25
         97 |          2        0.02       37.27
         98 |          7        0.07       37.34
         99 |      6,266       62.66      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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