Spatial Coverage
- Los Angeles County (Calif.)21
- Minas Gerais (Brazil)21
- New France21
- Pacific Coast.21
- Rhine River21
- San Luis Obispo County21
- Saxony-Anhalt (Germany)21
- Slovakia21
- Yosemite National Park (Calif.)21
- Zimbabwe21
- Arabian Sea20
- Arapahoe County20
- Arctic Ocean20
- Big Horn County20
- Bohemia (Czech Republic)20
- Butler County20
- Christian County20
- Galveston Bay (Tex.)20
- Gulf Coast (Tex.)20
- Inyo County20
