U.S. states: Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, Wisconsin, Wyoming
Other U.S.: District of Columbia, U.S. Government
Canada: Manitoba, Ontario, Quebec
U.S. states lost from February: Iowa, Minnesota, New Mexico, West Virginia
U.S. states gained (not in February): Alaska, Louisiana, Nebraska, Oklahoma, South Dakota, Wyoming
U.S. states seen yet at all: I'm down to just Hawaii and Mississippi. Alaska and Wyoming were on this list after February, but I did see them both during March.