United States (USA) - South Dakota north of approximately 44°20'N - counties of Beadle; Brookings; Brown; Butte; Campbell; Clark; Codington; Corson; Day; Deuel; Dewey; Edmunds; Faulk; Grant; Hamlin; Hand; Harding; Hyde; Kingsbury; Lawrence; Marshall; McPherson; Meade; Perkins; Potter; Roberts; Spink; Sully; Walworth; Ziebach.