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

    Time of |
Accident-Mi |
       nute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        987        9.87        9.87
          1 |         59        0.59       10.46
          2 |         51        0.51       10.97
          3 |         61        0.61       11.58
          4 |         54        0.54       12.12
          5 |        463        4.63       16.75
          6 |         51        0.51       17.26
          7 |         60        0.60       17.86
          8 |         79        0.79       18.65
          9 |         41        0.41       19.06
         10 |        616        6.16       25.22
         11 |         43        0.43       25.65
         12 |         50        0.50       26.15
         13 |         47        0.47       26.62
         14 |         49        0.49       27.11
         15 |        789        7.89       35.00
         16 |         58        0.58       35.58
         17 |         34        0.34       35.92
         18 |         69        0.69       36.61
         19 |         36        0.36       36.97
         20 |        607        6.07       43.04
         21 |         30        0.30       43.34
         22 |         56        0.56       43.90
         23 |         42        0.42       44.32
         24 |         41        0.41       44.73
         25 |        429        4.29       49.02
         26 |         39        0.39       49.41
         27 |         57        0.57       49.98
         28 |         49        0.49       50.47
         29 |         45        0.45       50.92
         30 |      1,033       10.33       61.25
         31 |         36        0.36       61.61
         32 |         57        0.57       62.18
         33 |         49        0.49       62.67
         34 |         36        0.36       63.03
         35 |        439        4.39       67.42
         36 |         30        0.30       67.72
         37 |         52        0.52       68.24
         38 |         49        0.49       68.73
         39 |         59        0.59       69.32
         40 |        560        5.60       74.92
         41 |         42        0.42       75.34
         42 |         45        0.45       75.79
         43 |         66        0.66       76.45
         44 |         38        0.38       76.83
         45 |        746        7.46       84.29
         46 |         39        0.39       84.68
         47 |         45        0.45       85.13
         48 |         40        0.40       85.53
         49 |         37        0.37       85.90
         50 |        566        5.66       91.56
         51 |         38        0.38       91.94
         52 |         55        0.55       92.49
         53 |         52        0.52       93.01
         54 |         56        0.56       93.57
         55 |        430        4.30       97.87
         56 |         51        0.51       98.38
         57 |         43        0.43       98.81
         58 |         69        0.69       99.50
         59 |         40        0.40       99.90
         99 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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