_dta:
  1.  carzip92014q4 set up by Jean Roth , jroth@nber.org , 28 Aug 2014
  2.  raw data file name: ZIP9_OCT14.txt

  obs:       999,626                          
 vars:             8                          28 Aug 2014 18:58
 size:    21,991,772                          (_dta has notes)
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              storage   display    value
variable name   type    format     label      variable label
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stabbr          str2    %9s                   State - 2-Letter Abbreviation
zipcode         str5    %9s                   ZIP Code
carrier         str5    %9s                   Carrier Number
locality        str2    %9s                   Pricing Locality
plus4flag       str1    %9s                   Plus Four Flag 0 = no +4 Extension, 1 = +4 Extension
plus4           str4    %9s                   Plus Four Portion of ZIP Code
year            int     %8.0g                 Year
quarter         byte    %8.0g                 Quarter
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Sorted by:  carrier  zipcode  plus4