Frequencies for first 10,000 rows of prov2855 variable in pos1998 dataset :

 stations - |
      total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,432       94.32       94.32
          1 |          1        0.01       94.33
          2 |          4        0.04       94.37
          3 |          6        0.06       94.43
          4 |          5        0.05       94.48
          5 |          7        0.07       94.55
          6 |         23        0.23       94.78
          7 |         13        0.13       94.91
          8 |         24        0.24       95.15
          9 |         25        0.25       95.40
         10 |         61        0.61       96.01
         11 |         11        0.11       96.12
         12 |         45        0.45       96.57
         13 |         32        0.32       96.89
         14 |         25        0.25       97.14
         15 |         29        0.29       97.43
         16 |         35        0.35       97.78
         17 |         16        0.16       97.94
         18 |         22        0.22       98.16
         19 |         16        0.16       98.32
         20 |         35        0.35       98.67
         21 |         24        0.24       98.91
         22 |         22        0.22       99.13
         23 |          3        0.03       99.16
         24 |         19        0.19       99.35
         25 |         19        0.19       99.54
         26 |          5        0.05       99.59
         27 |          3        0.03       99.62
         28 |         10        0.10       99.72
         29 |          2        0.02       99.74
         30 |          4        0.04       99.78
         31 |          2        0.02       99.80
         32 |          3        0.03       99.83
         33 |          1        0.01       99.84
         34 |          5        0.05       99.89
         35 |          1        0.01       99.90
         36 |          3        0.03       99.93
         40 |          2        0.02       99.95
         41 |          1        0.01       99.96
         42 |          1        0.01       99.97
         48 |          1        0.01       99.98
         49 |          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