Frequencies for msr_cd variable in dbo_vwhqi_us_national_img_avg dataset :

    Measure |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
      OP_10 |          1       25.00       25.00
      OP_11 |          1       25.00       50.00
       OP_8 |          1       25.00       75.00
       OP_9 |          1       25.00      100.00
------------+-----------------------------------
      Total |          4      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016