Frequencies for first 10,000 rows of econds_10 variable in mortterr2007 dataset :

Sequence of |
  condition |
     within |
  part/line |
         10 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.02        0.02
          3 |          4        0.04        0.06
          5 |          3        0.03        0.09
          6 |          2        0.02        0.11
          . |      9,989       99.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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