Frequencies for first 10,000 rows of mdcl_scl_srvc_cd variable in pos2013 datas

   Mdcl Scl |
    Srvc Cd |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      7,946       79.46       79.46
          0 |        309        3.09       82.55
          1 |      1,351       13.51       96.06
          2 |        289        2.89       98.95
          3 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016