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

    Time of |
Accident-Mi |
       nute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        977        9.77        9.77
          1 |         66        0.66       10.43
          2 |         58        0.58       11.01
          3 |         50        0.50       11.51
          4 |         53        0.53       12.04
          5 |        479        4.79       16.83
          6 |         43        0.43       17.26
          7 |         44        0.44       17.70
          8 |         66        0.66       18.36
          9 |         61        0.61       18.97
         10 |        570        5.70       24.67
         11 |         43        0.43       25.10
         12 |         52        0.52       25.62
         13 |         65        0.65       26.27
         14 |         57        0.57       26.84
         15 |        721        7.21       34.05
         16 |         42        0.42       34.47
         17 |         58        0.58       35.05
         18 |         62        0.62       35.67
         19 |         46        0.46       36.13
         20 |        592        5.92       42.05
         21 |         46        0.46       42.51
         22 |         49        0.49       43.00
         23 |         57        0.57       43.57
         24 |         50        0.50       44.07
         25 |        400        4.00       48.07
         26 |         56        0.56       48.63
         27 |         45        0.45       49.08
         28 |         69        0.69       49.77
         29 |         44        0.44       50.21
         30 |        974        9.74       59.95
         31 |         35        0.35       60.30
         32 |         64        0.64       60.94
         33 |         40        0.40       61.34
         34 |         43        0.43       61.77
         35 |        426        4.26       66.03
         36 |         46        0.46       66.49
         37 |         56        0.56       67.05
         38 |         59        0.59       67.64
         39 |         49        0.49       68.13
         40 |        591        5.91       74.04
         41 |         50        0.50       74.54
         42 |         44        0.44       74.98
         43 |         75        0.75       75.73
         44 |         50        0.50       76.23
         45 |        649        6.49       82.72
         46 |         52        0.52       83.24
         47 |         50        0.50       83.74
         48 |         76        0.76       84.50
         49 |         38        0.38       84.88
         50 |        586        5.86       90.74
         51 |         36        0.36       91.10
         52 |         48        0.48       91.58
         53 |         61        0.61       92.19
         54 |         55        0.55       92.74
         55 |        421        4.21       96.95
         56 |         47        0.47       97.42
         57 |         70        0.70       98.12
         58 |         56        0.56       98.68
         59 |         53        0.53       99.21
         99 |         79        0.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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