Frequencies for first 10,000 rows of partflag variable in sf12010880us16 dataset :

  Part Flag |      Freq.     Percent        Cum.
------------+-----------------------------------
          P |      9,976       99.76       99.76
          W |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017