18 (月)	05:45	07:10	15:05	23:11
	63cm	63cm	132cm	17cm
中潮 出 06:51 入 15:45 出 08:30 入 17:53

コイセボイ（北海道）2028年12月18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
12/18 00:00	19.9	↑1.4
12/18 00:10	21.4	↑1.5
12/18 00:20	23.0	↑1.6
12/18 00:30	24.7	↑1.7
12/18 00:40	26.4	↑1.7
12/18 00:50	28.2	↑1.8
12/18 01:00	30.1	↑1.9
12/18 01:10	32.0	↑1.9
12/18 01:20	33.9	↑1.9
12/18 01:30	35.9	↑2.0
12/18 01:40	37.8	↑1.9
12/18 01:50	39.7	↑1.9
12/18 02:00	41.6	↑1.9
12/18 02:10	43.4	↑1.8
12/18 02:20	45.2	↑1.8
12/18 02:30	47.0	↑1.8
12/18 02:40	48.6	↑1.6
12/18 02:50	50.2	↑1.6
12/18 03:00	51.7	↑1.5
12/18 03:10	53.1	↑1.4
12/18 03:20	54.5	↑1.4
12/18 03:30	55.7	↑1.2
12/18 03:40	56.8	↑1.1
12/18 03:50	57.8	↑1.0
12/18 04:00	58.7	↑0.9
12/18 04:10	59.5	↑0.8
12/18 04:20	60.2	↑0.7
12/18 04:30	60.8	↑0.6
12/18 04:40	61.3	↑0.5
12/18 04:50	61.7	↑0.4
12/18 05:00	62.1	↑0.4
12/18 05:10	62.3	↑0.2
12/18 05:20	62.5	↑0.2
12/18 05:30	62.6	↑0.1
12/18 05:40	62.6	0	満潮
12/18 05:50	62.6	0
12/18 06:00	62.6	0
12/18 06:10	62.5	↓-0.1
12/18 06:20	62.4	↓-0.1
12/18 06:30	62.3	↓-0.1
12/18 06:40	62.2	↓-0.1
12/18 06:50	62.1	↓-0.1
12/18 07:00	62.1	0	干潮
12/18 07:10	62.1	0	干潮
12/18 07:20	62.1	0
12/18 07:30	62.2	↑0.1
12/18 07:40	62.3	↑0.1
12/18 07:50	62.6	↑0.3
12/18 08:00	62.9	↑0.3
12/18 08:10	63.3	↑0.4
12/18 08:20	63.8	↑0.5
12/18 08:30	64.4	↑0.6
12/18 08:40	65.1	↑0.7
12/18 08:50	66.0	↑0.9
12/18 09:00	66.9	↑0.9
12/18 09:10	68.0	↑1.1
12/18 09:20	69.2	↑1.2
12/18 09:30	70.5	↑1.3
12/18 09:40	72.0	↑1.5
12/18 09:50	73.5	↑1.5
12/18 10:00	75.2	↑1.7
12/18 10:10	77.0	↑1.8
12/18 10:20	78.9	↑1.9
12/18 10:30	80.9	↑2.0
12/18 10:40	83.0	↑2.1
12/18 10:50	85.2	↑2.2
12/18 11:00	87.5	↑2.3
12/18 11:10	89.8	↑2.3
12/18 11:20	92.2	↑2.4
12/18 11:30	94.6	↑2.4
12/18 11:40	97.1	↑2.5
12/18 11:50	99.6	↑2.5
12/18 12:00	102.0	↑2.4
12/18 12:10	104.5	↑2.5
12/18 12:20	107.0	↑2.5
12/18 12:30	109.4	↑2.4
12/18 12:40	111.7	↑2.3
12/18 12:50	114.0	↑2.3
12/18 13:00	116.2	↑2.2
12/18 13:10	118.3	↑2.1
12/18 13:20	120.3	↑2.0
12/18 13:30	122.2	↑1.9
12/18 13:40	123.9	↑1.7
12/18 13:50	125.5	↑1.6
12/18 14:00	126.9	↑1.4
12/18 14:10	128.1	↑1.2
12/18 14:20	129.1	↑1.0
12/18 14:30	130.0	↑0.9
12/18 14:40	130.6	↑0.6
12/18 14:50	131.0	↑0.4
12/18 15:00	131.2	↑0.2	満潮
12/18 15:10	131.2	0
12/18 15:20	130.9	↓-0.3
12/18 15:30	130.5	↓-0.4
12/18 15:40	129.7	↓-0.8
12/18 15:50	128.8	↓-0.9
12/18 16:00	127.6	↓-1.2
12/18 16:10	126.2	↓-1.4
12/18 16:20	124.5	↓-1.7
12/18 16:30	122.7	↓-1.8
12/18 16:40	120.6	↓-2.1
12/18 16:50	118.3	↓-2.3
12/18 17:00	115.8	↓-2.5
12/18 17:10	113.1	↓-2.7
12/18 17:20	110.3	↓-2.8
12/18 17:30	107.3	↓-3.0
12/18 17:40	104.1	↓-3.2
12/18 17:50	100.8	↓-3.3
12/18 18:00	97.4	↓-3.4
12/18 18:10	93.9	↓-3.5
12/18 18:20	90.2	↓-3.7
12/18 18:30	86.5	↓-3.7
12/18 18:40	82.8	↓-3.7
12/18 18:50	79.0	↓-3.8
12/18 19:00	75.2	↓-3.8
12/18 19:10	71.3	↓-3.9	最大潮位差
12/18 19:20	67.5	↓-3.8
12/18 19:30	63.8	↓-3.7
12/18 19:40	60.0	↓-3.8
12/18 19:50	56.4	↓-3.6
12/18 20:00	52.8	↓-3.6
12/18 20:10	49.3	↓-3.5
12/18 20:20	45.9	↓-3.4
12/18 20:30	42.7	↓-3.2
12/18 20:40	39.6	↓-3.1
12/18 20:50	36.7	↓-2.9
12/18 21:00	33.9	↓-2.8
12/18 21:10	31.3	↓-2.6
12/18 21:20	28.8	↓-2.5
12/18 21:30	26.6	↓-2.2
12/18 21:40	24.6	↓-2.0
12/18 21:50	22.8	↓-1.8
12/18 22:00	21.2	↓-1.6
12/18 22:10	19.8	↓-1.4
12/18 22:20	18.6	↓-1.2
12/18 22:30	17.7	↓-0.9
12/18 22:40	16.9	↓-0.8
12/18 22:50	16.4	↓-0.5
12/18 23:00	16.1	↓-0.3
12/18 23:10	16.0	↓-0.1	干潮
12/18 23:20	16.1	↑0.1
12/18 23:30	16.4	↑0.3
12/18 23:40	16.9	↑0.5
12/18 23:50	17.6	↑0.7