Frequencies for first 10,000 rows of prov2855 variable in pos2001 dataset :

 stations - |
      total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,335       93.35       93.35
          1 |          2        0.02       93.37
          2 |          4        0.04       93.41
          3 |          7        0.07       93.48
          4 |          6        0.06       93.54
          5 |          8        0.08       93.62
          6 |         21        0.21       93.83
          7 |         13        0.13       93.96
          8 |         25        0.25       94.21
          9 |         25        0.25       94.46
         10 |         72        0.72       95.18
         11 |          7        0.07       95.25
         12 |         58        0.58       95.83
         13 |         28        0.28       96.11
         14 |         25        0.25       96.36
         15 |         30        0.30       96.66
         16 |         46        0.46       97.12
         17 |         17        0.17       97.29
         18 |         29        0.29       97.58
         19 |         21        0.21       97.79
         20 |         43        0.43       98.22
         21 |         28        0.28       98.50
         22 |         30        0.30       98.80
         23 |          7        0.07       98.87
         24 |         27        0.27       99.14
         25 |         24        0.24       99.38
         26 |         11        0.11       99.49
         27 |          4        0.04       99.53
         28 |          9        0.09       99.62
         29 |          4        0.04       99.66
         30 |          7        0.07       99.73
         31 |          4        0.04       99.77
         32 |          2        0.02       99.79
         33 |          2        0.02       99.81
         34 |          5        0.05       99.86
         35 |          2        0.02       99.88
         36 |          5        0.05       99.93
         38 |          1        0.01       99.94
         40 |          1        0.01       99.95
         41 |          1        0.01       99.96
         42 |          1        0.01       99.97
         48 |          1        0.01       99.98
         59 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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