# Estimate the percent of temperatures within 1 standard deviation of the mean. round temperatures to the nearest 10 degrees. for example, 1 standard deviation below the mean is 61.3-21.5=39.8 which would be rounded to 40.

Ach grid measures a surface area 2.5 degrees latitude by 2.5 degrees longitude. ... on the  average of the weather or tide stations  within the grid

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