Frequencies for first 10,000 rows of fileid variable in sf12000860us15 dataset :

       File |
Identificat |
        ion |      Freq.     Percent        Cum.
------------+-----------------------------------
      uSF1F |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017