Frequencies for first 10,000 rows of nationalnetwork variable in plan2014 dataset :

   National |
    Network |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      5,065       50.65       50.65
        YES |          4        0.04       50.69
        Yes |      4,931       49.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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