20 (土)	10:22	18:14	-	-
	80cm	35cm	-	-
若潮 出 04:31 入 18:11 出 02:08 入 13:25

コイセボイ（北海道）2047年04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
4/20 00:00	52.8	↑0.2
4/20 00:10	53.0	↑0.2
4/20 00:20	53.2	↑0.2
4/20 00:30	53.3	↑0.1
4/20 00:40	53.5	↑0.2
4/20 00:50	53.5	0
4/20 01:00	53.6	↑0.1
4/20 01:10	53.7	↑0.1
4/20 01:20	53.7	0
4/20 01:30	53.7	0
4/20 01:40	53.7	0
4/20 01:50	53.7	0
4/20 02:00	53.8	↑0.1
4/20 02:10	53.8	0
4/20 02:20	53.8	0
4/20 02:30	53.8	0
4/20 02:40	53.9	↑0.1
4/20 02:50	54.0	↑0.1
4/20 03:00	54.1	↑0.1
4/20 03:10	54.2	↑0.1
4/20 03:20	54.3	↑0.1
4/20 03:30	54.5	↑0.2
4/20 03:40	54.7	↑0.2
4/20 03:50	55.0	↑0.3
4/20 04:00	55.3	↑0.3
4/20 04:10	55.6	↑0.3
4/20 04:20	56.0	↑0.4
4/20 04:30	56.4	↑0.4
4/20 04:40	56.9	↑0.5
4/20 04:50	57.4	↑0.5
4/20 05:00	58.0	↑0.6
4/20 05:10	58.6	↑0.6
4/20 05:20	59.2	↑0.6
4/20 05:30	59.9	↑0.7
4/20 05:40	60.6	↑0.7
4/20 05:50	61.4	↑0.8
4/20 06:00	62.2	↑0.8
4/20 06:10	63.0	↑0.8
4/20 06:20	63.8	↑0.8
4/20 06:30	64.7	↑0.9
4/20 06:40	65.6	↑0.9
4/20 06:50	66.5	↑0.9
4/20 07:00	67.4	↑0.9
4/20 07:10	68.3	↑0.9
4/20 07:20	69.3	↑1.0
4/20 07:30	70.2	↑0.9
4/20 07:40	71.1	↑0.9
4/20 07:50	72.0	↑0.9
4/20 08:00	72.9	↑0.9
4/20 08:10	73.7	↑0.8
4/20 08:20	74.5	↑0.8
4/20 08:30	75.3	↑0.8
4/20 08:40	76.1	↑0.8
4/20 08:50	76.7	↑0.6
4/20 09:00	77.4	↑0.7
4/20 09:10	78.0	↑0.6
4/20 09:20	78.5	↑0.5
4/20 09:30	78.9	↑0.4
4/20 09:40	79.3	↑0.4
4/20 09:50	79.6	↑0.3
4/20 10:00	79.8	↑0.2
4/20 10:10	79.9	↑0.1
4/20 10:20	80.0	↑0.1	満潮
4/20 10:30	79.9	↓-0.1
4/20 10:40	79.8	↓-0.1
4/20 10:50	79.6	↓-0.2
4/20 11:00	79.3	↓-0.3
4/20 11:10	78.9	↓-0.4
4/20 11:20	78.4	↓-0.5
4/20 11:30	77.8	↓-0.6
4/20 11:40	77.1	↓-0.7
4/20 11:50	76.4	↓-0.7
4/20 12:00	75.5	↓-0.9
4/20 12:10	74.6	↓-0.9
4/20 12:20	73.6	↓-1.0
4/20 12:30	72.5	↓-1.1
4/20 12:40	71.3	↓-1.2
4/20 12:50	70.1	↓-1.2
4/20 13:00	68.8	↓-1.3
4/20 13:10	67.5	↓-1.3
4/20 13:20	66.1	↓-1.4
4/20 13:30	64.6	↓-1.5
4/20 13:40	63.1	↓-1.5
4/20 13:50	61.6	↓-1.5
4/20 14:00	60.1	↓-1.5
4/20 14:10	58.6	↓-1.5
4/20 14:20	57.0	↓-1.6	最大潮位差
4/20 14:30	55.5	↓-1.5
4/20 14:40	53.9	↓-1.6	最大潮位差
4/20 14:50	52.4	↓-1.5
4/20 15:00	50.9	↓-1.5
4/20 15:10	49.4	↓-1.5
4/20 15:20	47.9	↓-1.5
4/20 15:30	46.5	↓-1.4
4/20 15:40	45.1	↓-1.4
4/20 15:50	43.8	↓-1.3
4/20 16:00	42.6	↓-1.2
4/20 16:10	41.4	↓-1.2
4/20 16:20	40.3	↓-1.1
4/20 16:30	39.3	↓-1.0
4/20 16:40	38.3	↓-1.0
4/20 16:50	37.5	↓-0.8
4/20 17:00	36.7	↓-0.8
4/20 17:10	36.0	↓-0.7
4/20 17:20	35.5	↓-0.5
4/20 17:30	35.0	↓-0.5
4/20 17:40	34.6	↓-0.4
4/20 17:50	34.3	↓-0.3
4/20 18:00	34.2	↓-0.1
4/20 18:10	34.1	↓-0.1	干潮
4/20 18:20	34.1	0
4/20 18:30	34.2	↑0.1
4/20 18:40	34.4	↑0.2
4/20 18:50	34.7	↑0.3
4/20 19:00	35.1	↑0.4
4/20 19:10	35.6	↑0.5
4/20 19:20	36.1	↑0.5
4/20 19:30	36.7	↑0.6
4/20 19:40	37.4	↑0.7
4/20 19:50	38.2	↑0.8
4/20 20:00	39.0	↑0.8
4/20 20:10	39.9	↑0.9
4/20 20:20	40.8	↑0.9
4/20 20:30	41.8	↑1.0
4/20 20:40	42.8	↑1.0
4/20 20:50	43.8	↑1.0
4/20 21:00	44.8	↑1.0
4/20 21:10	45.8	↑1.0
4/20 21:20	46.9	↑1.1
4/20 21:30	47.9	↑1.0
4/20 21:40	48.9	↑1.0
4/20 21:50	49.9	↑1.0
4/20 22:00	50.9	↑1.0
4/20 22:10	51.9	↑1.0
4/20 22:20	52.8	↑0.9
4/20 22:30	53.7	↑0.9
4/20 22:40	54.5	↑0.8
4/20 22:50	55.2	↑0.7
4/20 23:00	55.9	↑0.7
4/20 23:10	56.6	↑0.7
4/20 23:20	57.2	↑0.6
4/20 23:30	57.7	↑0.5
4/20 23:40	58.1	↑0.4
4/20 23:50	58.5	↑0.4