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

    arrival |
   time ems |
      (min) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         82        0.82        0.82
          1 |         38        0.38        1.20
          2 |         50        0.50        1.70
          3 |         40        0.40        2.10
          4 |         41        0.41        2.51
          5 |         75        0.75        3.26
          6 |         54        0.54        3.80
          7 |         44        0.44        4.24
          8 |         54        0.54        4.78
          9 |         38        0.38        5.16
         10 |         82        0.82        5.98
         11 |         48        0.48        6.46
         12 |         49        0.49        6.95
         13 |         57        0.57        7.52
         14 |         47        0.47        7.99
         15 |         78        0.78        8.77
         16 |         54        0.54        9.31
         17 |         37        0.37        9.68
         18 |         47        0.47       10.15
         19 |         47        0.47       10.62
         20 |         73        0.73       11.35
         21 |         39        0.39       11.74
         22 |         46        0.46       12.20
         23 |         49        0.49       12.69
         24 |         49        0.49       13.18
         25 |         50        0.50       13.68
         26 |         45        0.45       14.13
         27 |         36        0.36       14.49
         28 |         55        0.55       15.04
         29 |         54        0.54       15.58
         30 |        104        1.04       16.62
         31 |         60        0.60       17.22
         32 |         46        0.46       17.68
         33 |         52        0.52       18.20
         34 |         44        0.44       18.64
         35 |         73        0.73       19.37
         36 |         50        0.50       19.87
         37 |         46        0.46       20.33
         38 |         46        0.46       20.79
         39 |         43        0.43       21.22
         40 |         61        0.61       21.83
         41 |         56        0.56       22.39
         42 |         41        0.41       22.80
         43 |         48        0.48       23.28
         44 |         45        0.45       23.73
         45 |         63        0.63       24.36
         46 |         50        0.50       24.86
         47 |         48        0.48       25.34
         48 |         47        0.47       25.81
         49 |         44        0.44       26.25
         50 |         65        0.65       26.90
         51 |         35        0.35       27.25
         52 |         63        0.63       27.88
         53 |         50        0.50       28.38
         54 |         47        0.47       28.85
         55 |         75        0.75       29.60
         56 |         56        0.56       30.16
         57 |         44        0.44       30.60
         58 |         51        0.51       31.11
         59 |         42        0.42       31.53
         88 |         85        0.85       32.38
         97 |          4        0.04       32.42
         98 |        346        3.46       35.88
         99 |      6,412       64.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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