Frequencies for pmcycl_wt variable in parkwork dataset :

 dry weight |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,085       99.45       99.45
        542 |          1        0.09       99.54
        562 |          1        0.09       99.63
        637 |          1        0.09       99.73
        721 |          1        0.09       99.82
        754 |          1        0.09       99.91
        765 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,091      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016