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SELECT cast( SQRT( POWER(ROUND(MAX(lat_n) - MIN(lat_n), 4), 2) + POWER(ROUND(MAX(long_w) - MIN(long_w), 4), 2) ) AS decimal(10,4)) FROM station;
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Weather Observation Station 19
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SELECT cast( SQRT( POWER(ROUND(MAX(lat_n) - MIN(lat_n), 4), 2) + POWER(ROUND(MAX(long_w) - MIN(long_w), 4), 2) ) AS decimal(10,4)) FROM station;