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32127 Studies found for: value
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Map Legend
Region Name Number of Studies
World 32,127  
Africa   [map]   1,165  
Central America   [map]   596  
East Asia   [map]   4,113  
Japan 1,035   [studies]
Europe   [map]   11,455  
Middle East   [map]   1,624  
North America 13,722  
Canada   [map]   2,781   [studies]
Mexico 831   [studies]
United States   [map]   12,367   [studies]
North Asia   [map]   1,280  
Pacifica   [map]   1,272  
South America   [map]   1,738  
South Asia   [map]   685  
Southeast Asia   [map]   875  

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Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.