Frequencies for alphacount variable in count1984_14 dataset :

Alpha Count |      Freq.     Percent        Cum.
------------+-----------------------------------
       1214 |          1       25.00       25.00
     624179 |          1       25.00       50.00
     647201 |          1       25.00       75.00
     701520 |          1       25.00      100.00
------------+-----------------------------------
      Total |          4      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018