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

     minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        822        8.22        8.22
          1 |         62        0.62        8.84
          2 |         71        0.71        9.55
          3 |         82        0.82       10.37
          4 |         74        0.74       11.11
          5 |        440        4.40       15.51
          6 |         62        0.62       16.13
          7 |         65        0.65       16.78
          8 |         76        0.76       17.54
          9 |         64        0.64       18.18
         10 |        554        5.54       23.72
         11 |         44        0.44       24.16
         12 |         83        0.83       24.99
         13 |         78        0.78       25.77
         14 |         81        0.81       26.58
         15 |        638        6.38       32.96
         16 |         57        0.57       33.53
         17 |         53        0.53       34.06
         18 |         92        0.92       34.98
         19 |         70        0.70       35.68
         20 |        602        6.02       41.70
         21 |         46        0.46       42.16
         22 |         60        0.60       42.76
         23 |         79        0.79       43.55
         24 |         55        0.55       44.10
         25 |        429        4.29       48.39
         26 |         65        0.65       49.04
         27 |         61        0.61       49.65
         28 |         77        0.77       50.42
         29 |         56        0.56       50.98
         30 |        808        8.08       59.06
         31 |         49        0.49       59.55
         32 |         64        0.64       60.19
         33 |         61        0.61       60.80
         34 |         58        0.58       61.38
         35 |        393        3.93       65.31
         36 |         60        0.60       65.91
         37 |         51        0.51       66.42
         38 |         82        0.82       67.24
         39 |         60        0.60       67.84
         40 |        527        5.27       73.11
         41 |         57        0.57       73.68
         42 |         85        0.85       74.53
         43 |         83        0.83       75.36
         44 |         56        0.56       75.92
         45 |        660        6.60       82.52
         46 |         42        0.42       82.94
         47 |         64        0.64       83.58
         48 |         80        0.80       84.38
         49 |         49        0.49       84.87
         50 |        529        5.29       90.16
         51 |         57        0.57       90.73
         52 |         61        0.61       91.34
         53 |         64        0.64       91.98
         54 |         57        0.57       92.55
         55 |        391        3.91       96.46
         56 |         53        0.53       96.99
         57 |         84        0.84       97.83
         58 |         73        0.73       98.56
         59 |         52        0.52       99.08
         99 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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