Frequencies for first 10,000 rows of econds_6 variable in linkco1991us_num dataset :

Sequence of |
  condition |
     within |
part/line 6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,691       96.91       96.91
          1 |         68        0.68       97.59
          2 |        110        1.10       98.69
          3 |        103        1.03       99.72
          4 |         26        0.26       99.98
          5 |          1        0.01       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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