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

     minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        629        6.29        6.29
          1 |        100        1.00        7.29
          2 |         82        0.82        8.11
          3 |         98        0.98        9.09
          4 |         85        0.85        9.94
          5 |        384        3.84       13.78
          6 |         90        0.90       14.68
          7 |        108        1.08       15.76
          8 |        113        1.13       16.89
          9 |         91        0.91       17.80
         10 |        476        4.76       22.56
         11 |         71        0.71       23.27
         12 |        104        1.04       24.31
         13 |         96        0.96       25.27
         14 |         96        0.96       26.23
         15 |        463        4.63       30.86
         16 |         92        0.92       31.78
         17 |        106        1.06       32.84
         18 |        103        1.03       33.87
         19 |         82        0.82       34.69
         20 |        433        4.33       39.02
         21 |         79        0.79       39.81
         22 |         98        0.98       40.79
         23 |        102        1.02       41.81
         24 |         78        0.78       42.59
         25 |        360        3.60       46.19
         26 |         79        0.79       46.98
         27 |         98        0.98       47.96
         28 |         90        0.90       48.86
         29 |         87        0.87       49.73
         30 |        592        5.92       55.65
         31 |         64        0.64       56.29
         32 |         97        0.97       57.26
         33 |        101        1.01       58.27
         34 |         79        0.79       59.06
         35 |        347        3.47       62.53
         36 |         85        0.85       63.38
         37 |        106        1.06       64.44
         38 |         97        0.97       65.41
         39 |         82        0.82       66.23
         40 |        449        4.49       70.72
         41 |         90        0.90       71.62
         42 |        106        1.06       72.68
         43 |        112        1.12       73.80
         44 |         95        0.95       74.75
         45 |        513        5.13       79.88
         46 |         67        0.67       80.55
         47 |         81        0.81       81.36
         48 |        114        1.14       82.50
         49 |         81        0.81       83.31
         50 |        472        4.72       88.03
         51 |         69        0.69       88.72
         52 |        100        1.00       89.72
         53 |        112        1.12       90.84
         54 |         86        0.86       91.70
         55 |        360        3.60       95.30
         56 |         80        0.80       96.10
         57 |        108        1.08       97.18
         58 |         81        0.81       97.99
         59 |         93        0.93       98.92
         99 |        108        1.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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