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what does Variance (+/- degrees) mean in Query?

Posted: Fri Mar 19, 2010 10:01 pm
by clariceji
what does Variance (+/- degrees) mean in Query? After I do a query there by different Variance, there r different number of stations. but sometimes, they all reach 11000 stations and I'm not able to see the next 1000. What r the real number of stations in a paticular Variance?