Weather Observation Station 18

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    In SQL Server:

    DECLARE @a FLOAT, @b FLOAT, @c FLOAT, @d FLOAT

    SET @a = ( SELECT MIN(LAT_N) FROM STATION ) SET @b = ( SELECT MIN(LONG_W) FROM STATION ) SET @c = ( SELECT MAX(LAT_N) FROM STATION ) SET @d = ( SELECT MAX(LONG_W) FROM STATION ) SELECT ROUND(ABS(@c - @a) + ABS(@d - @b), 4, 0);