Frequencies for first 10,000 rows of days variable in pspp2012_90 dataset :

    Days of |
     Shared |
  Intervals |      Freq.     Percent        Cum.
------------+-----------------------------------
         90 |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 12 Feb 2018