Region
Africa
9
Africa, North
1
Africa, Sub-Saharan
1
Alaska
1
Asia
9
Asia, Central
3
Australia
1
Azerbaijan
2
Bengal, Bay of
2
Brazil
1
Bulgaria
2
California
7
Cameroon
1
Canada
4
Caribbean Area
1
Caspian Sea Lowland (Kazakhstan and Russia)
1
Caspian Sea Region
2
Caucasus, South
1
China
23
Colombia
1
Colorado
2
Developing countries
11
East Asia
3
Ethiopia
1
Eurasia
1
Europe
8
Europe, Eastern
6
Europe, Western
1
European Union countries
19
Former Soviet republics
3
Gambia
1
Germany
4
Great Britain
7
Guatemala
2
Gulf States
1
Hawaii
1
Houston
2
India
8
Indonesia
3
Iran
3
Israel
1
Italy
1
Japan
3
Kazakhstan
1
Kentucky
1
Kenya
2
Kola Peninsula
1
Korea (North)
1
La Guajira (Department)
1
Latin America
9
more ...