Frequencies for s5_c1_7 variable in hcris2552_10_2010 dataset :

    station |
    s500000 |
00700 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.09        0.09
          2 |         33        1.42        1.51
          3 |         55        2.37        3.88
          4 |         12        0.52        4.39
          5 |          2        0.09        4.48
          6 |          2        0.09        4.57
          8 |          1        0.04        4.61
         12 |          1        0.04        4.65
         18 |          2        0.09        4.74
         44 |          1        0.04        4.78
        296 |          1        0.04        4.82
          . |      2,210       95.18      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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