23 (金)	07:33	00:20	17:12	10:28
	15cm	-5cm	30cm	14cm
中潮 出 04:48 入 18:29 出 23:03 入 07:36

江差／桧山（北海道）2038年04月23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
4/23 00:00	-5.6	↓-0.1
4/23 00:10	-5.7	↓-0.1	干潮
4/23 00:20	-5.8	↓-0.1	干潮
4/23 00:30	-5.7	↑0.1
4/23 00:40	-5.6	↑0.1
4/23 00:50	-5.4	↑0.2
4/23 01:00	-5.2	↑0.2
4/23 01:10	-4.9	↑0.3
4/23 01:20	-4.5	↑0.4
4/23 01:30	-4.1	↑0.4
4/23 01:40	-3.6	↑0.5
4/23 01:50	-3.1	↑0.5
4/23 02:00	-2.5	↑0.6
4/23 02:10	-1.9	↑0.6
4/23 02:20	-1.2	↑0.7
4/23 02:30	-0.6	↑0.6
4/23 02:40	0.1	↑0.7
4/23 02:50	0.9	↑0.8
4/23 03:00	1.6	↑0.7
4/23 03:10	2.4	↑0.8
4/23 03:20	3.2	↑0.8
4/23 03:30	3.9	↑0.7
4/23 03:40	4.7	↑0.8
4/23 03:50	5.5	↑0.8
4/23 04:00	6.2	↑0.7
4/23 04:10	7.0	↑0.8
4/23 04:20	7.7	↑0.7
4/23 04:30	8.4	↑0.7
4/23 04:40	9.1	↑0.7
4/23 04:50	9.7	↑0.6
4/23 05:00	10.3	↑0.6
4/23 05:10	10.9	↑0.6
4/23 05:20	11.5	↑0.6
4/23 05:30	12.0	↑0.5
4/23 05:40	12.4	↑0.4
4/23 05:50	12.8	↑0.4
4/23 06:00	13.2	↑0.4
4/23 06:10	13.6	↑0.4
4/23 06:20	13.9	↑0.3
4/23 06:30	14.1	↑0.2
4/23 06:40	14.3	↑0.2
4/23 06:50	14.5	↑0.2
4/23 07:00	14.6	↑0.1
4/23 07:10	14.7	↑0.1
4/23 07:20	14.8	↑0.1
4/23 07:30	14.8	0	満潮
4/23 07:40	14.8	0
4/23 07:50	14.7	↓-0.1
4/23 08:00	14.7	0
4/23 08:10	14.6	↓-0.1
4/23 08:20	14.5	↓-0.1
4/23 08:30	14.4	↓-0.1
4/23 08:40	14.2	↓-0.2
4/23 08:50	14.1	↓-0.1
4/23 09:00	14.0	↓-0.1
4/23 09:10	13.8	↓-0.2
4/23 09:20	13.7	↓-0.1
4/23 09:30	13.6	↓-0.1
4/23 09:40	13.5	↓-0.1
4/23 09:50	13.4	↓-0.1
4/23 10:00	13.3	↓-0.1
4/23 10:10	13.2	↓-0.1
4/23 10:20	13.2	0	干潮
4/23 10:30	13.2	0
4/23 10:40	13.2	0
4/23 10:50	13.3	↑0.1
4/23 11:00	13.4	↑0.1
4/23 11:10	13.5	↑0.1
4/23 11:20	13.6	↑0.1
4/23 11:30	13.8	↑0.2
4/23 11:40	14.1	↑0.3
4/23 11:50	14.4	↑0.3
4/23 12:00	14.7	↑0.3
4/23 12:10	15.0	↑0.3
4/23 12:20	15.4	↑0.4
4/23 12:30	15.8	↑0.4
4/23 12:40	16.3	↑0.5
4/23 12:50	16.8	↑0.5
4/23 13:00	17.3	↑0.5
4/23 13:10	17.8	↑0.5
4/23 13:20	18.4	↑0.6
4/23 13:30	19.0	↑0.6
4/23 13:40	19.6	↑0.6
4/23 13:50	20.3	↑0.7
4/23 14:00	20.9	↑0.6
4/23 14:10	21.5	↑0.6
4/23 14:20	22.2	↑0.7
4/23 14:30	22.8	↑0.6
4/23 14:40	23.5	↑0.7
4/23 14:50	24.1	↑0.6
4/23 15:00	24.7	↑0.6
4/23 15:10	25.3	↑0.6
4/23 15:20	25.9	↑0.6
4/23 15:30	26.4	↑0.5
4/23 15:40	26.9	↑0.5
4/23 15:50	27.4	↑0.5
4/23 16:00	27.8	↑0.4
4/23 16:10	28.2	↑0.4
4/23 16:20	28.5	↑0.3
4/23 16:30	28.8	↑0.3
4/23 16:40	29.0	↑0.2
4/23 16:50	29.2	↑0.2
4/23 17:00	29.3	↑0.1
4/23 17:10	29.3	0	満潮
4/23 17:20	29.3	0
4/23 17:30	29.2	↓-0.1
4/23 17:40	29.0	↓-0.2
4/23 17:50	28.8	↓-0.2
4/23 18:00	28.5	↓-0.3
4/23 18:10	28.1	↓-0.4
4/23 18:20	27.7	↓-0.4
4/23 18:30	27.2	↓-0.5
4/23 18:40	26.6	↓-0.6
4/23 18:50	26.0	↓-0.6
4/23 19:00	25.3	↓-0.7
4/23 19:10	24.5	↓-0.8
4/23 19:20	23.7	↓-0.8
4/23 19:30	22.9	↓-0.8
4/23 19:40	22.0	↓-0.9
4/23 19:50	21.0	↓-1.0
4/23 20:00	20.0	↓-1.0
4/23 20:10	19.0	↓-1.0
4/23 20:20	17.9	↓-1.1
4/23 20:30	16.8	↓-1.1
4/23 20:40	15.7	↓-1.1
4/23 20:50	14.6	↓-1.1
4/23 21:00	13.4	↓-1.2	最大潮位差
4/23 21:10	12.3	↓-1.1
4/23 21:20	11.1	↓-1.2	最大潮位差
4/23 21:30	10.0	↓-1.1
4/23 21:40	8.8	↓-1.2	最大潮位差
4/23 21:50	7.7	↓-1.1
4/23 22:00	6.6	↓-1.1
4/23 22:10	5.5	↓-1.1
4/23 22:20	4.4	↓-1.1
4/23 22:30	3.4	↓-1.0
4/23 22:40	2.4	↓-1.0
4/23 22:50	1.5	↓-0.9
4/23 23:00	0.6	↓-0.9
4/23 23:10	-0.2	↓-0.8
4/23 23:20	-1.0	↓-0.8
4/23 23:30	-1.8	↓-0.8
4/23 23:40	-2.4	↓-0.6
4/23 23:50	-3.0	↓-0.6