Frequencies for first 10,000 rows of econds_8 variable in linkco1991us_num dataset :

Sequence of |
  condition |
     within |
part/line 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,964       99.64       99.64
          2 |          3        0.03       99.67
          3 |         13        0.13       99.80
          4 |         11        0.11       99.91
          5 |          6        0.06       99.97
          6 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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