Frequencies for first 10,000 rows of chow_cnt variable in pos2014 dataset :

 CHOW Count |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,474       64.74       64.74
          1 |      1,443       14.43       79.17
          2 |        953        9.53       88.70
          3 |        395        3.95       92.65
          4 |        306        3.06       95.71
          5 |        181        1.81       97.52
          6 |        108        1.08       98.60
          7 |         64        0.64       99.24
          8 |         31        0.31       99.55
          9 |         16        0.16       99.71
         10 |         13        0.13       99.84
         11 |          7        0.07       99.91
         12 |          4        0.04       99.95
         13 |          3        0.03       99.98
         14 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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