Monthly state, regional and national heating degree days weighted by population /
U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Environmental Data and Information Service.

APA Citation

National Climatic Data Center (U.S.)., National Climatic Center., United States. National Environmental Satellite, D., United States. Environmental Data and Information Service. Monthly state, regional and national heating degree days weighted by population. Asheville, N.C.: National Climatic Center.

MLA Citation

National Climatic Data Center (U.S.), National Climatic Center, Data United States. National Environmental Satellite, and United States. Environmental Data and Information Service. Monthly State, Regional And National Heating Degree Days Weighted by Population. Asheville, N.C.: National Climatic Center,