Frequencies for first 10,000 rows of smsarfip variable in natlterr2002 dataset :

PMSA/MSA of |
  Residence |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      1,591       15.91       15.91
       0060 |        357        3.57       19.48
       0470 |        469        4.69       24.17
       1310 |        844        8.44       32.61
       4840 |        564        5.64       38.25
       6360 |        990        9.90       48.15
       7440 |      5,185       51.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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