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

    Time of |
Accident-Mi |
       nute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        929        9.29        9.29
          1 |         71        0.71       10.00
          2 |         73        0.73       10.73
          3 |         73        0.73       11.46
          4 |         56        0.56       12.02
          5 |        428        4.28       16.30
          6 |         55        0.55       16.85
          7 |         60        0.60       17.45
          8 |         61        0.61       18.06
          9 |         51        0.51       18.57
         10 |        557        5.57       24.14
         11 |         54        0.54       24.68
         12 |         72        0.72       25.40
         13 |         64        0.64       26.04
         14 |         59        0.59       26.63
         15 |        633        6.33       32.96
         16 |         41        0.41       33.37
         17 |         76        0.76       34.13
         18 |         86        0.86       34.99
         19 |         56        0.56       35.55
         20 |        604        6.04       41.59
         21 |         44        0.44       42.03
         22 |         71        0.71       42.74
         23 |         73        0.73       43.47
         24 |         68        0.68       44.15
         25 |        441        4.41       48.56
         26 |         48        0.48       49.04
         27 |         70        0.70       49.74
         28 |         65        0.65       50.39
         29 |         47        0.47       50.86
         30 |        880        8.80       59.66
         31 |         38        0.38       60.04
         32 |         58        0.58       60.62
         33 |         59        0.59       61.21
         34 |         35        0.35       61.56
         35 |        413        4.13       65.69
         36 |         60        0.60       66.29
         37 |         50        0.50       66.79
         38 |         73        0.73       67.52
         39 |         62        0.62       68.14
         40 |        558        5.58       73.72
         41 |         35        0.35       74.07
         42 |         63        0.63       74.70
         43 |         65        0.65       75.35
         44 |         60        0.60       75.95
         45 |        657        6.57       82.52
         46 |         51        0.51       83.03
         47 |         64        0.64       83.67
         48 |         72        0.72       84.39
         49 |         45        0.45       84.84
         50 |        575        5.75       90.59
         51 |         50        0.50       91.09
         52 |         46        0.46       91.55
         53 |         56        0.56       92.11
         54 |         47        0.47       92.58
         55 |        430        4.30       96.88
         56 |         53        0.53       97.41
         57 |         64        0.64       98.05
         58 |         68        0.68       98.73
         59 |         49        0.49       99.22
         99 |         78        0.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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