Frequencies for first 10,000 rows of prov2855 variable in pos1995 dataset :

 stations - |
      total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,526       95.26       95.26
          1 |          1        0.01       95.27
          2 |          6        0.06       95.33
          3 |          8        0.08       95.41
          4 |          4        0.04       95.45
          5 |          7        0.07       95.52
          6 |         21        0.21       95.73
          7 |         13        0.13       95.86
          8 |         25        0.25       96.11
          9 |         20        0.20       96.31
         10 |         58        0.58       96.89
         11 |         14        0.14       97.03
         12 |         38        0.38       97.41
         13 |         29        0.29       97.70
         14 |         26        0.26       97.96
         15 |         27        0.27       98.23
         16 |         20        0.20       98.43
         17 |         11        0.11       98.54
         18 |         17        0.17       98.71
         19 |          7        0.07       98.78
         20 |         25        0.25       99.03
         21 |         18        0.18       99.21
         22 |         14        0.14       99.35
         23 |          5        0.05       99.40
         24 |          9        0.09       99.49
         25 |         15        0.15       99.64
         26 |          7        0.07       99.71
         27 |          2        0.02       99.73
         28 |          5        0.05       99.78
         29 |          3        0.03       99.81
         30 |          2        0.02       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