Frequencies for first 10,000 rows of on_precip variable in natl2013 dataset :

Precipitous |
  Labor RFP |
606=f_on_pr |
     ecip R |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      8,992       89.92       89.92
          U |        479        4.79       94.71
          Y |        529        5.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015