Este del Canada (Newfoundland/Labrador, New Brunswick, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec)
Oeste del Canada (Alberta, British Columbia, Manitoba, NW Territories, Saskatchewan, Yukon)
Nordeste de los EE.UU. (Connecticut, New Hampshire, Delaware, New Jersey, District of Columbia, New York, Maine, Pennsylvania, Maryland, Rhode Island, Massachusetts, Vermont)
Sudeste de los EE.UU. (Alabama, North Carolina, Florida, Puerto Rico, Georgia, South Carolina, Kentucky, Tennessee, Louisiana, Virginia, Mississippi, West Virginia)
Este Central de los EE.UU. (Illinois, Indiana, Michigan, Ohio, Wisconsin)
Oeste Central de los EE.UU. (Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota, Wyoming)
Sudoeste de los EE.UU. (Arkansas, Colorado, Kansas, Missouri, New Mexico, Oklahoma, Texas)
Pacifico de los EE.UU. (Alaska, Arizona, California, Hawaii, Idaho, Nevada, Oregon, Utah, Washington)
