a factor with levels Akron OH
Albuquerque NM
Anaheim CA
Atlanta GA
Baltimore MD
Baton Rouge LA
Birmingham AL
Boston MA
Bradenton FL
Buffalo, NY
Charleston, SC
Chicago, IL
Cincinnati, OH
Cleveland, OH
Columbia, SC
Columbus, OH
Corpus Christi, TX
Dallas, TX
Daytona Beach, FL
Denver, CO
Des Moines, IA
Detroit, MI
El Paso, TX
Grand Rapids, MI
Hartford, CT
Honolulu, HI
Houston, TX
Indianapolis, IN
Jacksonville, FL
Kansas City, MO
Knoxville, TN
Las Vegas, NV
Los Angeles, CA
Louisville, KY
Madison, WI
Memphis, TN
Miami, FL
Milwaukee, WI
Minneapolis, MN
Mobile, AL
Nashville, TN
New Haven, CT
New Orleans, LA
New York, NY
Oklahoma City, OK
Omaha, NE
Orlando, FL
Philadelphia, PA
Phoenix, AZ
Pittsburgh, PA
Portland, OR
Providence, RI
Sacramento, CA
Salt Lake City, Ut
San Antonio, TX
San Diego, CA
San Francisco, CA
Seattle, WA
Spokane, WA
St Louis, MO
Syracuse,NY
Tampa, FL
Toledo, OH
Tulsa, OK
Washington, DC