Frequencies for first 10,000 rows of prov2855 variable in pos1997 dataset :

 stations - |
      total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,434       94.34       94.34
          1 |          2        0.02       94.36
          2 |          5        0.05       94.41
          3 |          8        0.08       94.49
          4 |          5        0.05       94.54
          5 |          8        0.08       94.62
          6 |         25        0.25       94.87
          7 |         13        0.13       95.00
          8 |         28        0.28       95.28
          9 |         24        0.24       95.52
         10 |         64        0.64       96.16
         11 |         14        0.14       96.30
         12 |         44        0.44       96.74
         13 |         32        0.32       97.06
         14 |         25        0.25       97.31
         15 |         30        0.30       97.61
         16 |         32        0.32       97.93
         17 |         15        0.15       98.08
         18 |         20        0.20       98.28
         19 |         18        0.18       98.46
         20 |         27        0.27       98.73
         21 |         21        0.21       98.94
         22 |         22        0.22       99.16
         23 |          3        0.03       99.19
         24 |         14        0.14       99.33
         25 |         18        0.18       99.51
         26 |          5        0.05       99.56
         27 |          4        0.04       99.60
         28 |         12        0.12       99.72
         29 |          2        0.02       99.74
         30 |          5        0.05       99.79
         31 |          2        0.02       99.81
         32 |          3        0.03       99.84
         33 |          1        0.01       99.85
         34 |          2        0.02       99.87
         35 |          1        0.01       99.88
         36 |          3        0.03       99.91
         37 |          1        0.01       99.92
         38 |          1        0.01       99.93
         40 |          2        0.02       99.95
         41 |          1        0.01       99.96
         42 |          1        0.01       99.97
         46 |          1        0.01       99.98
         48 |          1        0.01       99.99
         56 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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