SELECT ROUND(LONG_W, 4)
FROM STATION
WHERE LAT_N = (SELECT MIN(LAT_N) FROM STATION WHERE LAT_N > 38.7780);
SELECT ROUND(ABS(MIN(LAT_N) - MAX(LAT_N)) + ABS(MIN(LONG_W) - MAX(LONG_W)), 4)
FROM STATION;
SELECT ROUND(SQRT(POW(MAX(LAT_N) - MIN(LAT_N), 2) + POW(MAX(LONG_W) - MIN(LONG_W), 2)), 4)
FROM STATION;