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Spatial Coverage
- Florida8
- South Atlantic States5
- California4
- Middle Atlantic States4
- New England4
- Alaska2
- Atlantic States2
- California, Southern2
- Gulf States2
- Hudson River (N.Y. and N.J.)2
- Long Island (N.Y.)2
- Mississippi River2
- Missouri River2
- New Jersey2
- Northwest, Pacific2
- Southern States2
- Texas, South2
- United States2
- Atlantic Coast (South Atlantic States)1