20 (水)	06:10	09:16	16:32	-
	65cm	60cm	122cm	-
中潮 出 06:52 入 15:46 出 09:30 入 20:08

コイセボイ（北海道）2028年12月20日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。

時刻	潮位	高低差	各ポイント
12/20 00:00	21.2	↑0.2
12/20 00:10	21.6	↑0.4
12/20 00:20	22.2	↑0.6
12/20 00:30	23.0	↑0.8
12/20 00:40	23.9	↑0.9
12/20 00:50	24.9	↑1.0
12/20 01:00	26.1	↑1.2
12/20 01:10	27.4	↑1.3
12/20 01:20	28.9	↑1.5
12/20 01:30	30.4	↑1.5
12/20 01:40	32.0	↑1.6
12/20 01:50	33.7	↑1.7
12/20 02:00	35.4	↑1.7
12/20 02:10	37.2	↑1.8
12/20 02:20	39.0	↑1.8
12/20 02:30	40.8	↑1.8
12/20 02:40	42.6	↑1.8
12/20 02:50	44.5	↑1.9
12/20 03:00	46.3	↑1.8
12/20 03:10	48.0	↑1.7
12/20 03:20	49.7	↑1.7
12/20 03:30	51.4	↑1.7
12/20 03:40	53.0	↑1.6
12/20 03:50	54.5	↑1.5
12/20 04:00	55.9	↑1.4
12/20 04:10	57.2	↑1.3
12/20 04:20	58.4	↑1.2
12/20 04:30	59.6	↑1.2
12/20 04:40	60.6	↑1.0
12/20 04:50	61.5	↑0.9
12/20 05:00	62.3	↑0.8
12/20 05:10	63.0	↑0.7
12/20 05:20	63.5	↑0.5
12/20 05:30	64.0	↑0.5
12/20 05:40	64.3	↑0.3
12/20 05:50	64.6	↑0.3
12/20 06:00	64.7	↑0.1	満潮
12/20 06:10	64.8	↑0.1	満潮
12/20 06:20	64.7	↓-0.1
12/20 06:30	64.6	↓-0.1
12/20 06:40	64.4	↓-0.2
12/20 06:50	64.1	↓-0.3
12/20 07:00	63.8	↓-0.3
12/20 07:10	63.4	↓-0.4
12/20 07:20	63.0	↓-0.4
12/20 07:30	62.5	↓-0.5
12/20 07:40	62.1	↓-0.4
12/20 07:50	61.6	↓-0.5
12/20 08:00	61.2	↓-0.4
12/20 08:10	60.7	↓-0.5
12/20 08:20	60.3	↓-0.4
12/20 08:30	60.0	↓-0.3
12/20 08:40	59.7	↓-0.3
12/20 08:50	59.4	↓-0.3
12/20 09:00	59.2	↓-0.2
12/20 09:10	59.2	0	干潮
12/20 09:20	59.2	0
12/20 09:30	59.3	↑0.1
12/20 09:40	59.5	↑0.2
12/20 09:50	59.8	↑0.3
12/20 10:00	60.2	↑0.4
12/20 10:10	60.8	↑0.6
12/20 10:20	61.4	↑0.6
12/20 10:30	62.3	↑0.9
12/20 10:40	63.2	↑0.9
12/20 10:50	64.3	↑1.1
12/20 11:00	65.5	↑1.2
12/20 11:10	66.8	↑1.3
12/20 11:20	68.3	↑1.5
12/20 11:30	69.8	↑1.5
12/20 11:40	71.5	↑1.7
12/20 11:50	73.3	↑1.8
12/20 12:00	75.2	↑1.9
12/20 12:10	77.2	↑2.0
12/20 12:20	79.3	↑2.1
12/20 12:30	81.4	↑2.1
12/20 12:40	83.7	↑2.3
12/20 12:50	85.9	↑2.2
12/20 13:00	88.2	↑2.3
12/20 13:10	90.6	↑2.4
12/20 13:20	92.9	↑2.3
12/20 13:30	95.2	↑2.3
12/20 13:40	97.6	↑2.4
12/20 13:50	99.9	↑2.3
12/20 14:00	102.1	↑2.2
12/20 14:10	104.3	↑2.2
12/20 14:20	106.5	↑2.2
12/20 14:30	108.5	↑2.0
12/20 14:40	110.5	↑2.0
12/20 14:50	112.3	↑1.8
12/20 15:00	114.0	↑1.7
12/20 15:10	115.6	↑1.6
12/20 15:20	117.0	↑1.4
12/20 15:30	118.2	↑1.2
12/20 15:40	119.3	↑1.1
12/20 15:50	120.2	↑0.9
12/20 16:00	120.9	↑0.7
12/20 16:10	121.5	↑0.6
12/20 16:20	121.8	↑0.3
12/20 16:30	121.9	↑0.1	満潮
12/20 16:40	121.8	↓-0.1
12/20 16:50	121.5	↓-0.3
12/20 17:00	121.0	↓-0.5
12/20 17:10	120.3	↓-0.7
12/20 17:20	119.3	↓-1.0
12/20 17:30	118.2	↓-1.1
12/20 17:40	116.8	↓-1.4
12/20 17:50	115.3	↓-1.5
12/20 18:00	113.5	↓-1.8
12/20 18:10	111.6	↓-1.9
12/20 18:20	109.5	↓-2.1
12/20 18:30	107.2	↓-2.3
12/20 18:40	104.8	↓-2.4
12/20 18:50	102.2	↓-2.6
12/20 19:00	99.5	↓-2.7
12/20 19:10	96.6	↓-2.9
12/20 19:20	93.7	↓-2.9
12/20 19:30	90.7	↓-3.0
12/20 19:40	87.5	↓-3.2
12/20 19:50	84.4	↓-3.1
12/20 20:00	81.2	↓-3.2
12/20 20:10	77.9	↓-3.3	最大潮位差
12/20 20:20	74.7	↓-3.2
12/20 20:30	71.4	↓-3.3	最大潮位差
12/20 20:40	68.2	↓-3.2
12/20 20:50	65.0	↓-3.2
12/20 21:00	61.8	↓-3.2
12/20 21:10	58.8	↓-3.0
12/20 21:20	55.8	↓-3.0
12/20 21:30	52.9	↓-2.9
12/20 21:40	50.1	↓-2.8
12/20 21:50	47.4	↓-2.7
12/20 22:00	44.9	↓-2.5
12/20 22:10	42.5	↓-2.4
12/20 22:20	40.2	↓-2.3
12/20 22:30	38.2	↓-2.0
12/20 22:40	36.3	↓-1.9
12/20 22:50	34.5	↓-1.8
12/20 23:00	33.0	↓-1.5
12/20 23:10	31.6	↓-1.4
12/20 23:20	30.5	↓-1.1
12/20 23:30	29.5	↓-1.0
12/20 23:40	28.7	↓-0.8
12/20 23:50	28.2	↓-0.5