Zone 1 includes Connecticut, Maine, Massachusetts, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, Nova Scotia, Pennsylvania, Prince Edward Island, Quebec, Rhode Island, and Vermont.
Zone 2 includes Delaware, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, and West Virginia.
Zone 3 includes Indiana, Kentucky, Michigan, Ohio, and that portion of Ontario less than 85° longitude West of Greenwich.
Zone 4 includes Manitoba, Minnesota, North Dakota, Saskatchewan, South Dakota, Wisconsin, and the portion of Ontario more than 85° longitude West of Greenwich.
Zone 5 includes Illinois, Iowa, Kansas, Missouri, and Nebraska.
Zone 6 includes Alabama, Arkansas, Louisiana, Mississippi, Oklahoma, Tennessee, and Texas.
Zone 7 includes Alberta, Colorado, Idaho, Montana, New Mexico, Utah, and Wyoming.
Zone 8 includes Alaska, Arizona, British Columbia, California, Hawaii, Nevada, Oregon, and Washington.