Frequencies for minimumtobaccofreemonthsrule variable in busrules2018 dataset :

       Minimum |
  Tobacco Free |
   Months Rule |      Freq.     Percent        Cum.
---------------+-----------------------------------
             4 |         25        0.58        0.58
             6 |      2,283       53.18       53.76
Not Applicable |      1,985       46.24      100.00
---------------+-----------------------------------
         Total |      4,293      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017