Frequencies for first 10,000 rows of sumlevstr variable in countypopmonthasrh dataset :

               Geographic Summary Level |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
050 = County and/or Statistical Equival |     10,000      100.00      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 12 May 2018