Worker Ant CTmin

CTmin = critical thermal minimum in degrees Celsius; ColonyID = identity of the colony from which the individual worker ants were tested; habitat.designation = whether the habitat is "urban" or "rural"; longitude = the decimal degrees longitude of the collection site of the colony; latitude = the decimal degrees latitude of the collection site of the colony; treatment = the temperature treatment under which the colonies were reared in the laboratory, including 21, 23, 25, 27, or 29 degrees Celsius; city = the urbanization cline from which the colonies were obtained, including "Knx" (Knoxville, TN), "Cin" (Cincinnati, OH), "Cle" (Cleveland, OH)