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Start Over You searched for: Place North America Remove constraint Place: North America Resource Type Raster data Remove constraint Resource Type: Raster data Publisher National Geophysical and Solar-Terrestrial Data Center Remove constraint Publisher: National Geophysical and Solar-Terrestrial Data Center

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1994 and 1995. National Geophysical and Solar-Terrestrial Data Center. This map shows the four types of light sources as observed in North America during 1994-1995. The Defense Meteorological Satellite Program (DMSP) O... National Geophysical and Solar-Terrestrial Data Center.