Frequencies for first 10,000 rows of prov2855 variable in pos1993 dataset :

 stations - |
      total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,558       95.58       95.58
          1 |          2        0.02       95.60
          2 |          4        0.04       95.64
          3 |         10        0.10       95.74
          4 |          5        0.05       95.79
          5 |          9        0.09       95.88
          6 |         22        0.22       96.10
          7 |         14        0.14       96.24
          8 |         24        0.24       96.48
          9 |         20        0.20       96.68
         10 |         50        0.50       97.18
         11 |         13        0.13       97.31
         12 |         39        0.39       97.70
         13 |         21        0.21       97.91
         14 |         23        0.23       98.14
         15 |         25        0.25       98.39
         16 |         18        0.18       98.57
         17 |         12        0.12       98.69
         18 |         18        0.18       98.87
         19 |          5        0.05       98.92
         20 |         22        0.22       99.14
         21 |         14        0.14       99.28
         22 |         13        0.13       99.41
         23 |          3        0.03       99.44
         24 |          9        0.09       99.53
         25 |         15        0.15       99.68
         26 |          5        0.05       99.73
         27 |          3        0.03       99.76
         28 |          5        0.05       99.81
         29 |          1        0.01       99.82
         30 |          1        0.01       99.83
         31 |          4        0.04       99.87
         32 |          1        0.01       99.88
         33 |          1        0.01       99.89
         34 |          1        0.01       99.90
         35 |          2        0.02       99.92
         36 |          1        0.01       99.93
         37 |          2        0.02       99.95
         40 |          1        0.01       99.96
         41 |          1        0.01       99.97
         42 |          1        0.01       99.98
         46 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016