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

     minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        626        6.26        6.26
          1 |         86        0.86        7.12
          2 |         98        0.98        8.10
          3 |        101        1.01        9.11
          4 |         86        0.86        9.97
          5 |        346        3.46       13.43
          6 |         86        0.86       14.29
          7 |        121        1.21       15.50
          8 |        103        1.03       16.53
          9 |         83        0.83       17.36
         10 |        402        4.02       21.38
         11 |         85        0.85       22.23
         12 |        103        1.03       23.26
         13 |         99        0.99       24.25
         14 |        106        1.06       25.31
         15 |        458        4.58       29.89
         16 |         87        0.87       30.76
         17 |        106        1.06       31.82
         18 |        126        1.26       33.08
         19 |         83        0.83       33.91
         20 |        405        4.05       37.96
         21 |         89        0.89       38.85
         22 |         88        0.88       39.73
         23 |         88        0.88       40.61
         24 |         91        0.91       41.52
         25 |        335        3.35       44.87
         26 |         89        0.89       45.76
         27 |        109        1.09       46.85
         28 |        118        1.18       48.03
         29 |         82        0.82       48.85
         30 |        581        5.81       54.66
         31 |         77        0.77       55.43
         32 |         98        0.98       56.41
         33 |         89        0.89       57.30
         34 |         92        0.92       58.22
         35 |        374        3.74       61.96
         36 |         97        0.97       62.93
         37 |         99        0.99       63.92
         38 |        110        1.10       65.02
         39 |         73        0.73       65.75
         40 |        443        4.43       70.18
         41 |         88        0.88       71.06
         42 |         96        0.96       72.02
         43 |        109        1.09       73.11
         44 |         93        0.93       74.04
         45 |        473        4.73       78.77
         46 |         79        0.79       79.56
         47 |         92        0.92       80.48
         48 |         98        0.98       81.46
         49 |         96        0.96       82.42
         50 |        450        4.50       86.92
         51 |         73        0.73       87.65
         52 |        108        1.08       88.73
         53 |         91        0.91       89.64
         54 |        106        1.06       90.70
         55 |        332        3.32       94.02
         56 |         90        0.90       94.92
         57 |        102        1.02       95.94
         58 |        124        1.24       97.18
         59 |         83        0.83       98.01
         99 |        199        1.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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