Frequencies for trnsmtl_num variable in hcris2552_10_2010 dataset :

transmittal |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.13        0.13
          A |      1,932       83.20       83.33
          B |        259       11.15       94.49
          C |         46        1.98       96.47
          D |         23        0.99       97.46
          E |         12        0.52       97.98
          F |          5        0.22       98.19
          G |          1        0.04       98.23
          I |          3        0.13       98.36
          R |          1        0.04       98.41
          S |          3        0.13       98.54
          Z |         34        1.46      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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