20 (土)	04:10	08:28	15:16	22:32
	68cm	51cm	116cm	27cm
大潮 出 06:14 入 16:58 出 17:36 入 06:44

コイセボイ（北海道）2038年02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
2/20 00:00	34.1	↑1.7
2/20 00:10	35.9	↑1.8
2/20 00:20	37.7	↑1.8
2/20 00:30	39.6	↑1.9
2/20 00:40	41.6	↑2.0
2/20 00:50	43.5	↑1.9
2/20 01:00	45.5	↑2.0
2/20 01:10	47.4	↑1.9
2/20 01:20	49.4	↑2.0
2/20 01:30	51.2	↑1.8
2/20 01:40	53.1	↑1.9
2/20 01:50	54.8	↑1.7
2/20 02:00	56.5	↑1.7
2/20 02:10	58.1	↑1.6
2/20 02:20	59.6	↑1.5
2/20 02:30	61.0	↑1.4
2/20 02:40	62.3	↑1.3
2/20 02:50	63.5	↑1.2
2/20 03:00	64.5	↑1.0
2/20 03:10	65.4	↑0.9
2/20 03:20	66.2	↑0.8
2/20 03:30	66.8	↑0.6
2/20 03:40	67.3	↑0.5
2/20 03:50	67.6	↑0.3
2/20 04:00	67.8	↑0.2	満潮
2/20 04:10	67.8	0	満潮
2/20 04:20	67.8	0
2/20 04:30	67.6	↓-0.2
2/20 04:40	67.2	↓-0.4
2/20 04:50	66.8	↓-0.4
2/20 05:00	66.3	↓-0.5
2/20 05:10	65.6	↓-0.7
2/20 05:20	64.9	↓-0.7
2/20 05:30	64.1	↓-0.8
2/20 05:40	63.2	↓-0.9
2/20 05:50	62.3	↓-0.9
2/20 06:00	61.3	↓-1.0
2/20 06:10	60.3	↓-1.0
2/20 06:20	59.3	↓-1.0
2/20 06:30	58.3	↓-1.0
2/20 06:40	57.3	↓-1.0
2/20 06:50	56.4	↓-0.9
2/20 07:00	55.4	↓-1.0
2/20 07:10	54.6	↓-0.8
2/20 07:20	53.7	↓-0.9
2/20 07:30	53.0	↓-0.7
2/20 07:40	52.4	↓-0.6
2/20 07:50	51.8	↓-0.6
2/20 08:00	51.4	↓-0.4
2/20 08:10	51.1	↓-0.3
2/20 08:20	50.9	↓-0.2	干潮
2/20 08:30	50.9	0
2/20 08:40	51.0	↑0.1
2/20 08:50	51.3	↑0.3
2/20 09:00	51.7	↑0.4
2/20 09:10	52.3	↑0.6
2/20 09:20	53.0	↑0.7
2/20 09:30	53.9	↑0.9
2/20 09:40	54.9	↑1.0
2/20 09:50	56.2	↑1.3
2/20 10:00	57.5	↑1.3
2/20 10:10	59.0	↑1.5
2/20 10:20	60.7	↑1.7
2/20 10:30	62.5	↑1.8
2/20 10:40	64.4	↑1.9
2/20 10:50	66.4	↑2.0
2/20 11:00	68.6	↑2.2
2/20 11:10	70.8	↑2.2
2/20 11:20	73.2	↑2.4
2/20 11:30	75.6	↑2.4
2/20 11:40	78.0	↑2.4
2/20 11:50	80.5	↑2.5
2/20 12:00	83.1	↑2.6
2/20 12:10	85.6	↑2.5
2/20 12:20	88.1	↑2.5
2/20 12:30	90.7	↑2.6
2/20 12:40	93.1	↑2.4
2/20 12:50	95.6	↑2.5
2/20 13:00	97.9	↑2.3
2/20 13:10	100.2	↑2.3
2/20 13:20	102.4	↑2.2
2/20 13:30	104.4	↑2.0
2/20 13:40	106.4	↑2.0
2/20 13:50	108.1	↑1.7
2/20 14:00	109.8	↑1.7
2/20 14:10	111.2	↑1.4
2/20 14:20	112.5	↑1.3
2/20 14:30	113.6	↑1.1
2/20 14:40	114.4	↑0.8
2/20 14:50	115.1	↑0.7
2/20 15:00	115.6	↑0.5
2/20 15:10	115.8	↑0.2	満潮
2/20 15:20	115.8	0
2/20 15:30	115.6	↓-0.2
2/20 15:40	115.1	↓-0.5
2/20 15:50	114.5	↓-0.6
2/20 16:00	113.6	↓-0.9
2/20 16:10	112.4	↓-1.2
2/20 16:20	111.1	↓-1.3
2/20 16:30	109.5	↓-1.6
2/20 16:40	107.8	↓-1.7
2/20 16:50	105.8	↓-2.0
2/20 17:00	103.7	↓-2.1
2/20 17:10	101.4	↓-2.3
2/20 17:20	98.9	↓-2.5
2/20 17:30	96.2	↓-2.7
2/20 17:40	93.5	↓-2.7
2/20 17:50	90.6	↓-2.9
2/20 18:00	87.6	↓-3.0
2/20 18:10	84.5	↓-3.1
2/20 18:20	81.3	↓-3.2
2/20 18:30	78.1	↓-3.2
2/20 18:40	74.9	↓-3.2
2/20 18:50	71.6	↓-3.3	最大潮位差
2/20 19:00	68.4	↓-3.2
2/20 19:10	65.1	↓-3.3	最大潮位差
2/20 19:20	61.9	↓-3.2
2/20 19:30	58.7	↓-3.2
2/20 19:40	55.7	↓-3.0
2/20 19:50	52.7	↓-3.0
2/20 20:00	49.8	↓-2.9
2/20 20:10	47.0	↓-2.8
2/20 20:20	44.3	↓-2.7
2/20 20:30	41.8	↓-2.5
2/20 20:40	39.5	↓-2.3
2/20 20:50	37.3	↓-2.2
2/20 21:00	35.3	↓-2.0
2/20 21:10	33.5	↓-1.8
2/20 21:20	31.9	↓-1.6
2/20 21:30	30.5	↓-1.4
2/20 21:40	29.3	↓-1.2
2/20 21:50	28.4	↓-0.9
2/20 22:00	27.6	↓-0.8
2/20 22:10	27.1	↓-0.5
2/20 22:20	26.7	↓-0.4
2/20 22:30	26.6	↓-0.1	干潮
2/20 22:40	26.7	↑0.1
2/20 22:50	27.0	↑0.3
2/20 23:00	27.5	↑0.5
2/20 23:10	28.1	↑0.6
2/20 23:20	29.0	↑0.9
2/20 23:30	30.0	↑1.0
2/20 23:40	31.2	↑1.2
2/20 23:50	32.5	↑1.3