Frequencies for first 10,000 rows of metrores variable in natlterr1998 dataset :

 Met/Nonmet |
  county of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,423       84.23       84.23
          2 |      1,568       15.68       99.91
          9 |          4        0.04       99.95
          Z |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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