Frequencies for first 10,000 rows of op_precip variable in natlterr2010 dataset :

Precipitous |
  Labor RFP |
606=f_ol_pr |
     ecip R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,656       46.56       46.56
          N |      4,313       43.13       89.69
          U |        993        9.93       99.62
          Y |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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