Budrow Swartzendruber in Millersville noticed that daily high and low temperatures for the lower 48, reported beneath our national weather map, often differ from the Washington Post's. "One would think the high and low temperatures would be the same regardless of the source," he reasoned. It would seem so, Budrow. But The Sun and the Post use different data vendors, with different observing stations. So the Post reported Tuesday's low as zero degrees at Shirley Basin, Wyo., missing our minus-2 report from Berlin, N.H.