Frequencies for first 10,000 rows of vdayr variable in namcs2012 dataset :

Day of week |
   of visit |      Freq.     Percent        Cum.
------------+-----------------------------------
     Sunday |         12        0.12        0.12
     Monday |      2,386       23.86       23.98
    Tuesday |      2,296       22.96       46.94
  Wednesday |      1,783       17.83       64.77
   Thursday |      1,969       19.69       84.46
     Friday |      1,417       14.17       98.63
   Saturday |        137        1.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016