Frequencies for s5_c4_4 variable in hcris2552_10_2013 dataset :

       capd |
  exchanges |
    per day |
    s500000 |
00400 00400 |      Freq.     Percent        Cum.
------------+-----------------------------------
        .17 |          1        0.02        0.02
        .25 |          1        0.02        0.03
          1 |          7        0.11        0.14
          2 |          2        0.03        0.18
          3 |          3        0.05        0.22
          4 |         20        0.32        0.54
          5 |          1        0.02        0.56
          6 |          1        0.02        0.58
          7 |          2        0.03        0.61
         12 |          1        0.02        0.62
         52 |          1        0.02        0.64
          . |      6,208       99.36      100.00
------------+-----------------------------------
      Total |      6,248      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018