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WITH CTE AS(
SELECT LAT_N,
ROW_NUMBER() OVER (ORDER BY LAT_N ASC) AS RN,
COUNT(*) OVER () AS CNT
FROM STATION)
SELECT ROUND(LAT_N, 4)
FROM CTE
WHERE RN=(CNT + 1)/2
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Weather Observation Station 20
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WITH CTE AS( SELECT LAT_N, ROW_NUMBER() OVER (ORDER BY LAT_N ASC) AS RN, COUNT(*) OVER () AS CNT FROM STATION) SELECT ROUND(LAT_N, 4) FROM CTE WHERE RN=(CNT + 1)/2