Frequencies for first 10,000 rows of precip variable in natlterr1994 dataset :

Precipitous |
      labor |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         44        0.44        0.44
          2 |      9,933       99.33       99.77
          9 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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