United States (USA) - South Dakota south of approximately 44°20'N - counties of Aurora; Bennett; Bon Homme; Brule; Buffalo; Charles Mix; Clay; Custer; Davison; Douglas; Fall River; Gregory; Haakon; Hanson; Hughes; Hutchinson; Jackson; Jerauld; Jones; Lake; Lincoln; Lyman; McCook; Mellette; Miner; Minnehaha; Moody; Pennington; Sanborn; Shannon; Stanley; Todd; Tripp; Turner; Union; Yankton.