Table 3. Frequency of predominant fluctuation periods (unit: d) of 30 d high-pass filtered surface water temperatures measured from Geojedo to Toseong stations in 2016 and 2017

Sta.	1.0	5.1–6.3	7.3–8.7	9.2–10.8	11.4–13.1	14.1–16.6	18.3	20.3–26.1
Toseong	2				1	1		2
Yeongok	2		1		1			2
Donghae	1					2	1	2
Samcheok						1	2	3
Jukbyeon				1	1	2		2
Hupo					1	3		1
Pohang				1		2		3
Wolpo	1		1		1		1	2
Guryongpo				2	1		1	2
Iduckseo						1	2	3
Ulsan				2		1		3
Ganjeolgot						3	1	2
Jangan				1	1	2	1	1
Gwangan						4	1	1
Bukhang						4	1	1
Namhang						4	1	1
Geojedo	1					3	1	1
Total	7		2	7	7	33	13	32