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

    Time of |
Accident-Mi |
       nute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,069       10.69       10.69
          1 |         61        0.61       11.30
          2 |         45        0.45       11.75
          3 |         49        0.49       12.24
          4 |         54        0.54       12.78
          5 |        426        4.26       17.04
          6 |         48        0.48       17.52
          7 |         55        0.55       18.07
          8 |         71        0.71       18.78
          9 |         39        0.39       19.17
         10 |        576        5.76       24.93
         11 |         26        0.26       25.19
         12 |         65        0.65       25.84
         13 |         45        0.45       26.29
         14 |         55        0.55       26.84
         15 |        748        7.48       34.32
         16 |         48        0.48       34.80
         17 |         42        0.42       35.22
         18 |         59        0.59       35.81
         19 |         48        0.48       36.29
         20 |        562        5.62       41.91
         21 |         36        0.36       42.27
         22 |         49        0.49       42.76
         23 |         50        0.50       43.26
         24 |         38        0.38       43.64
         25 |        473        4.73       48.37
         26 |         50        0.50       48.87
         27 |         50        0.50       49.37
         28 |         46        0.46       49.83
         29 |         46        0.46       50.29
         30 |      1,057       10.57       60.86
         31 |         33        0.33       61.19
         32 |         38        0.38       61.57
         33 |         48        0.48       62.05
         34 |         44        0.44       62.49
         35 |        394        3.94       66.43
         36 |         50        0.50       66.93
         37 |         35        0.35       67.28
         38 |         56        0.56       67.84
         39 |         38        0.38       68.22
         40 |        591        5.91       74.13
         41 |         35        0.35       74.48
         42 |         45        0.45       74.93
         43 |         45        0.45       75.38
         44 |         54        0.54       75.92
         45 |        774        7.74       83.66
         46 |         34        0.34       84.00
         47 |         51        0.51       84.51
         48 |         50        0.50       85.01
         49 |         36        0.36       85.37
         50 |        599        5.99       91.36
         51 |         52        0.52       91.88
         52 |         61        0.61       92.49
         53 |         58        0.58       93.07
         54 |         48        0.48       93.55
         55 |        458        4.58       98.13
         56 |         39        0.39       98.52
         57 |         32        0.32       98.84
         58 |         59        0.59       99.43
         59 |         44        0.44       99.87
         99 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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