Frequencies for first 10,000 rows of dlys_stn_cnt variable in pos2009 dataset :

 STATIONS - |
      TOTAL |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,193       91.93       91.93
          1 |          7        0.07       92.00
          2 |         10        0.10       92.10
          3 |          8        0.08       92.18
          4 |          6        0.06       92.24
          5 |          6        0.06       92.30
          6 |         19        0.19       92.49
          7 |         13        0.13       92.62
          8 |         29        0.29       92.91
          9 |         25        0.25       93.16
         10 |         60        0.60       93.76
         11 |         12        0.12       93.88
         12 |         75        0.75       94.63
         13 |         30        0.30       94.93
         14 |         23        0.23       95.16
         15 |         35        0.35       95.51
         16 |         61        0.61       96.12
         17 |         25        0.25       96.37
         18 |         27        0.27       96.64
         19 |         19        0.19       96.83
         20 |         57        0.57       97.40
         21 |         43        0.43       97.83
         22 |         26        0.26       98.09
         23 |          6        0.06       98.15
         24 |         63        0.63       98.78
         25 |         24        0.24       99.02
         26 |         15        0.15       99.17
         27 |          6        0.06       99.23
         28 |         10        0.10       99.33
         29 |          4        0.04       99.37
         30 |         15        0.15       99.52
         31 |          5        0.05       99.57
         32 |         10        0.10       99.67
         33 |          2        0.02       99.69
         34 |          5        0.05       99.74
         35 |          1        0.01       99.75
         36 |          8        0.08       99.83
         37 |          2        0.02       99.85
         38 |          1        0.01       99.86
         40 |          4        0.04       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