LOCATIONS SUBMITTING DATA FOR 1991 State Location Code Colorado Fort Collins CO1 District of Columbia Washington Monument Grounds DC1 Idaho Rathdrum ID3 Illinois Carbondale IL2 Iowa Ames IA1 Kansas Wichita KS2 Maryland Beltsville UB1 Missouri St. Louis MO3 New Jersey North Brunswick NJ1 New Jersey Pittstown NJ2 Ohio Marysville OH1 Oregon Hubbard OR1 Oregon Halsey OR3 Pennsylvania University Park PA1 (mowed four times in 1991) Rhode Island Kingston RI1 Virginia Norton VA6 Washington Pullman WA1