20 (土)	11:04	05:12	23:58	17:29
	181cm	49cm	176cm	16cm
中潮 出 05:46 入 18:59 出 23:04 入 07:56 潮干狩り ◎ 15:42～18:59

島山（長崎）2041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	184.3	↓-2.2
4/20 00:10	181.5	↓-2.8
4/20 00:20	178.3	↓-3.2
4/20 00:30	174.6	↓-3.7
4/20 00:40	170.4	↓-4.2
4/20 00:50	165.9	↓-4.5
4/20 01:00	161.0	↓-4.9
4/20 01:10	155.8	↓-5.2
4/20 01:20	150.3	↓-5.5
4/20 01:30	144.6	↓-5.7
4/20 01:40	138.6	↓-6.0
4/20 01:50	132.6	↓-6.0
4/20 02:00	126.4	↓-6.2
4/20 02:10	120.2	↓-6.2
4/20 02:20	114.0	↓-6.2
4/20 02:30	107.8	↓-6.2
4/20 02:40	101.8	↓-6.0
4/20 02:50	95.8	↓-6.0
4/20 03:00	90.1	↓-5.7
4/20 03:10	84.6	↓-5.5
4/20 03:20	79.4	↓-5.2
4/20 03:30	74.4	↓-5.0
4/20 03:40	69.9	↓-4.5
4/20 03:50	65.7	↓-4.2
4/20 04:00	61.9	↓-3.8
4/20 04:10	58.6	↓-3.3
4/20 04:20	55.7	↓-2.9
4/20 04:30	53.3	↓-2.4
4/20 04:40	51.4	↓-1.9
4/20 04:50	50.0	↓-1.4
4/20 05:00	49.2	↓-0.8
4/20 05:10	48.8	↓-0.4	干潮
4/20 05:20	49.0	↑0.2
4/20 05:30	49.8	↑0.8
4/20 05:40	51.0	↑1.2
4/20 05:50	52.7	↑1.7
4/20 06:00	55.0	↑2.3
4/20 06:10	57.7	↑2.7
4/20 06:20	60.9	↑3.2
4/20 06:30	64.4	↑3.5
4/20 06:40	68.4	↑4.0
4/20 06:50	72.8	↑4.4
4/20 07:00	77.5	↑4.7
4/20 07:10	82.4	↑4.9
4/20 07:20	87.7	↑5.3
4/20 07:30	93.1	↑5.4
4/20 07:40	98.7	↑5.6
4/20 07:50	104.5	↑5.8
4/20 08:00	110.3	↑5.8
4/20 08:10	116.1	↑5.8
4/20 08:20	122.0	↑5.9
4/20 08:30	127.8	↑5.8
4/20 08:40	133.4	↑5.6
4/20 08:50	139.0	↑5.6
4/20 09:00	144.3	↑5.3
4/20 09:10	149.4	↑5.1
4/20 09:20	154.3	↑4.9
4/20 09:30	158.8	↑4.5
4/20 09:40	163.0	↑4.2
4/20 09:50	166.8	↑3.8
4/20 10:00	170.2	↑3.4
4/20 10:10	173.2	↑3.0
4/20 10:20	175.6	↑2.4
4/20 10:30	177.6	↑2.0
4/20 10:40	179.1	↑1.5
4/20 10:50	180.1	↑1.0
4/20 11:00	180.6	↑0.5	満潮
4/20 11:10	180.5	↓-0.1
4/20 11:20	179.9	↓-0.6
4/20 11:30	178.7	↓-1.2
4/20 11:40	177.0	↓-1.7
4/20 11:50	174.8	↓-2.2
4/20 12:00	172.1	↓-2.7
4/20 12:10	168.8	↓-3.3
4/20 12:20	165.2	↓-3.6
4/20 12:30	161.0	↓-4.2
4/20 12:40	156.4	↓-4.6
4/20 12:50	151.5	↓-4.9
4/20 13:00	146.2	↓-5.3
4/20 13:10	140.5	↓-5.7
4/20 13:20	134.6	↓-5.9
4/20 13:30	128.4	↓-6.2
4/20 13:40	122.0	↓-6.4
4/20 13:50	115.5	↓-6.5
4/20 14:00	108.8	↓-6.7
4/20 14:10	102.0	↓-6.8	最大潮位差
4/20 14:20	95.3	↓-6.7
4/20 14:30	88.5	↓-6.8	最大潮位差
4/20 14:40	81.8	↓-6.7
4/20 14:50	75.2	↓-6.6
4/20 15:00	68.8	↓-6.4
4/20 15:10	62.5	↓-6.3
4/20 15:20	56.5	↓-6.0
4/20 15:30	50.8	↓-5.7
4/20 15:40	45.4	↓-5.4
4/20 15:50	40.3	↓-5.1
4/20 16:00	35.6	↓-4.7
4/20 16:10	31.4	↓-4.2
4/20 16:20	27.6	↓-3.8
4/20 16:30	24.2	↓-3.4
4/20 16:40	21.4	↓-2.8
4/20 16:50	19.1	↓-2.3
4/20 17:00	17.3	↓-1.8
4/20 17:10	16.0	↓-1.3
4/20 17:20	15.3	↓-0.7	干潮
4/20 17:30	15.1	↓-0.2
4/20 17:40	15.4	↑0.3
4/20 17:50	16.4	↑1.0
4/20 18:00	17.8	↑1.4
4/20 18:10	19.8	↑2.0
4/20 18:20	22.3	↑2.5
4/20 18:30	25.3	↑3.0
4/20 18:40	28.7	↑3.4
4/20 18:50	32.6	↑3.9
4/20 19:00	36.9	↑4.3
4/20 19:10	41.6	↑4.7
4/20 19:20	46.7	↑5.1
4/20 19:30	52.1	↑5.4
4/20 19:40	57.8	↑5.7
4/20 19:50	63.7	↑5.9
4/20 20:00	69.8	↑6.1
4/20 20:10	76.1	↑6.3
4/20 20:20	82.5	↑6.4
4/20 20:30	88.9	↑6.4
4/20 20:40	95.4	↑6.5
4/20 20:50	101.9	↑6.5
4/20 21:00	108.4	↑6.5
4/20 21:10	114.7	↑6.3
4/20 21:20	120.9	↑6.2
4/20 21:30	127.0	↑6.1
4/20 21:40	132.8	↑5.8
4/20 21:50	138.4	↑5.6
4/20 22:00	143.6	↑5.2
4/20 22:10	148.6	↑5.0
4/20 22:20	153.2	↑4.6
4/20 22:30	157.4	↑4.2
4/20 22:40	161.3	↑3.9
4/20 22:50	164.7	↑3.4
4/20 23:00	167.6	↑2.9
4/20 23:10	170.1	↑2.5
4/20 23:20	172.2	↑2.1
4/20 23:30	173.7	↑1.5
4/20 23:40	174.8	↑1.1
4/20 23:50	175.4	↑0.6	満潮