Frequencies for s5_c1_6 variable in hcris2552_10_2010 dataset :

  number of |
   stations |
    s500000 |
00600 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.13        0.13
          3 |          2        0.09        0.22
          4 |          4        0.17        0.39
          5 |          7        0.30        0.69
          6 |         13        0.56        1.25
          7 |          5        0.22        1.46
          8 |         10        0.43        1.89
          9 |          4        0.17        2.07
         10 |          7        0.30        2.37
         11 |          2        0.09        2.45
         12 |          7        0.30        2.76
         13 |          2        0.09        2.84
         14 |          2        0.09        2.93
         15 |          1        0.04        2.97
         16 |          2        0.09        3.06
         17 |          2        0.09        3.14
         18 |          3        0.13        3.27
         19 |          2        0.09        3.36
         20 |          1        0.04        3.40
         21 |          2        0.09        3.49
         22 |          4        0.17        3.66
         24 |          6        0.26        3.92
         25 |          1        0.04        3.96
         26 |          1        0.04        4.01
         27 |          2        0.09        4.09
         28 |          2        0.09        4.18
         29 |          2        0.09        4.26
         34 |          1        0.04        4.31
         35 |          3        0.13        4.44
         41 |          2        0.09        4.52
         46 |          1        0.04        4.57
         47 |          1        0.04        4.61
         49 |          1        0.04        4.65
         50 |          1        0.04        4.69
         54 |          1        0.04        4.74
         62 |          1        0.04        4.78
         63 |          1        0.04        4.82
         64 |          1        0.04        4.87
         68 |          1        0.04        4.91
         74 |          1        0.04        4.95
          . |      2,207       95.05      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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