Frequencies for first 10,000 rows of dlys_stn_cnt variable in pos2013 dataset :

      Total |
   Approved |
   Stations |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        108        1.08        1.08
          1 |          8        0.08        1.16
          2 |          6        0.06        1.22
          3 |          9        0.09        1.31
          4 |          5        0.05        1.36
          5 |          8        0.08        1.44
          6 |         17        0.17        1.61
          7 |         13        0.13        1.74
          8 |         34        0.34        2.08
          9 |         32        0.32        2.40
         10 |         56        0.56        2.96
         11 |          9        0.09        3.05
         12 |         79        0.79        3.84
         13 |         34        0.34        4.18
         14 |         24        0.24        4.42
         15 |         33        0.33        4.75
         16 |         56        0.56        5.31
         17 |         29        0.29        5.60
         18 |         28        0.28        5.88
         19 |         16        0.16        6.04
         20 |         70        0.70        6.74
         21 |         32        0.32        7.06
         22 |         26        0.26        7.32
         23 |          8        0.08        7.40
         24 |         76        0.76        8.16
         25 |         25        0.25        8.41
         26 |         15        0.15        8.56
         27 |          1        0.01        8.57
         28 |         13        0.13        8.70
         29 |          2        0.02        8.72
         30 |         16        0.16        8.88
         31 |          5        0.05        8.93
         32 |         13        0.13        9.06
         33 |          3        0.03        9.09
         34 |          6        0.06        9.15
         35 |          5        0.05        9.20
         36 |          6        0.06        9.26
         38 |          2        0.02        9.28
         39 |          1        0.01        9.29
         40 |          4        0.04        9.33
         42 |          2        0.02        9.35
         47 |          1        0.01        9.36
         48 |          1        0.01        9.37
         52 |          1        0.01        9.38
         55 |          1        0.01        9.39
         56 |          1        0.01        9.40
         59 |          1        0.01        9.41
         76 |          1        0.01        9.42
          . |      9,058       90.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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