Frequencies for first 10,000 rows of dlys_stn_cnt variable in pos2007 dataset :

 stations - |
      total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,228       92.28       92.28
          1 |          7        0.07       92.35
          2 |          6        0.06       92.41
          3 |          6        0.06       92.47
          4 |          5        0.05       92.52
          5 |          6        0.06       92.58
          6 |         18        0.18       92.76
          7 |         11        0.11       92.87
          8 |         29        0.29       93.16
          9 |         25        0.25       93.41
         10 |         66        0.66       94.07
         11 |         10        0.10       94.17
         12 |         72        0.72       94.89
         13 |         33        0.33       95.22
         14 |         25        0.25       95.47
         15 |         37        0.37       95.84
         16 |         51        0.51       96.35
         17 |         25        0.25       96.60
         18 |         28        0.28       96.88
         19 |         22        0.22       97.10
         20 |         48        0.48       97.58
         21 |         39        0.39       97.97
         22 |         27        0.27       98.24
         23 |          6        0.06       98.30
         24 |         50        0.50       98.80
         25 |         25        0.25       99.05
         26 |         12        0.12       99.17
         27 |          4        0.04       99.21
         28 |         12        0.12       99.33
         29 |          5        0.05       99.38
         30 |         15        0.15       99.53
         31 |          6        0.06       99.59
         32 |          7        0.07       99.66
         33 |          2        0.02       99.68
         34 |          4        0.04       99.72
         35 |          1        0.01       99.73
         36 |         10        0.10       99.83
         37 |          1        0.01       99.84
         38 |          3        0.03       99.87
         40 |          3        0.03       99.90
         41 |          1        0.01       99.91
         42 |          1        0.01       99.92
         44 |          1        0.01       99.93
         47 |          1        0.01       99.94
         48 |          1        0.01       99.95
         54 |          1        0.01       99.96
         56 |          1        0.01       99.97
         60 |          1        0.01       99.98
         76 |          1        0.01       99.99
        161 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017