Assertion: conic projection's parallel | /r/UsedFor | usgs base map series
Facets:
value: for the 48 conterminous states
type: TRANSITIVE-OBJECT
Source sentences:
text: For USGS Base Map series for the 48 conterminous States, standard parallels are 33°N and 45°N (maximum scale error for map of 48 States is 2 ½%).