Frequencies for state variable in zipmil_12q4 dataset : two-digit | number | (fips code) | for | state/terri | tory | Freq. Percent Cum. ------------+----------------------------------- 6 | 161 29.93 29.93 12 | 36 6.69 36.62 36 | 341 63.38 100.00 ------------+----------------------------------- Total | 538 100.00 by Jean Roth , jroth@nber.org , 4 Jan 2016 tail -n+3 /homes/data/zip/sas/2012/desc/zipmil_12q4/byvar/tab/state.log | egre