Region
United States
1,160
California
5
Colorado
5
Connecticut
5
Maryland
5
Missouri
5
Nevada
5
Texas
5
Alaska
4
Arizona
4
Georgia
4
Guam
4
Hawaii
4
Montana
4
Nebraska
4
New Mexico
4
Virginia
4
Alabama
3
Arkansas
3
Atlantic Coast (U.S.)
3
Delaware
3
Florida
3
Indiana
3
Japan
3
Kentucky
3
Louisiana
3
Maine
3
Massachusetts
3
Minnesota
3
Mississippi
3
New York (State)
3
North Carolina
3
North Dakota
3
Oregon
3
South Carolina
3
Southern States
3
Tennessee
3
Utah
3
Washington (D.C.)
3
Washington (State)
3
West Virginia
3
Wisconsin
3
Wyoming
3
Iowa
2
Michigan
2
New Hampshire
2
Rhode Island
2
United States Virgin Islands
2
Vermont
2
Yucca Mountain
2
more ...