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'sql
/*
p1 at (a, b) and p2 at (c, d), it is |a - c| + |b - d|
*/
SELECT ROUND(ABS((MIN(LAT_N)) - (MAX(LAT_N))) + ABS((MIN(LONG_W)) - (MAX(LONG_W))), 4) AS distance
FROM STATION
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Weather Observation Station 18
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'sql /* p1 at (a, b) and p2 at (c, d), it is |a - c| + |b - d| */ SELECT ROUND(ABS((MIN(LAT_N)) - (MAX(LAT_N))) + ABS((MIN(LONG_W)) - (MAX(LONG_W))), 4) AS distance FROM STATION