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A. For the states west of approximately 104 longitude (exclusive of Hawaii and Alaska)
B. For the states west of the Mississippi River and east of approximately 104 longitude
C. For the states east of the Mississippi River north of the Ohio and Potomac rivers
D. For the states east of the Misssippi River south of the Ohio and Potomac rivers
E. For Hawaii and Alaska
F. For Puerto Rico and large areas of the conterminous United States.

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