The following data set contains measurements in grams per square meter of sulfate (SO 4) deposits during 1990 at 179 sites throughout the 48 states. data SO4; input Latitude Longitude SO4 @@; ...
The following data represent the deposition of sulfate (SO 4) at 179 sites in 48 contiguous states of the United States in 1990. Each observation records the latitude and longitude of the site as well ...
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