20 (水)	00:25	06:24	12:19	18:47
	173cm	63cm	163cm	38cm
中潮 出 05:46 入 18:59 出 23:52 入 09:35 潮干狩り ○ 17:47～18:59

島山（長崎）2033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	171.4	↑1.3
4/20 00:10	172.3	↑0.9
4/20 00:20	172.7	↑0.4	満潮
4/20 00:30	172.7	0
4/20 00:40	172.2	↓-0.5
4/20 00:50	171.3	↓-0.9
4/20 01:00	169.9	↓-1.4
4/20 01:10	168.1	↓-1.8
4/20 01:20	166.0	↓-2.1
4/20 01:30	163.4	↓-2.6
4/20 01:40	160.5	↓-2.9
4/20 01:50	157.3	↓-3.2
4/20 02:00	153.7	↓-3.6
4/20 02:10	149.9	↓-3.8
4/20 02:20	145.8	↓-4.1
4/20 02:30	141.5	↓-4.3
4/20 02:40	137.1	↓-4.4
4/20 02:50	132.5	↓-4.6
4/20 03:00	127.7	↓-4.8
4/20 03:10	123.0	↓-4.7
4/20 03:20	118.1	↓-4.9
4/20 03:30	113.3	↓-4.8
4/20 03:40	108.6	↓-4.7
4/20 03:50	103.9	↓-4.7
4/20 04:00	99.3	↓-4.6
4/20 04:10	94.8	↓-4.5
4/20 04:20	90.6	↓-4.2
4/20 04:30	86.5	↓-4.1
4/20 04:40	82.7	↓-3.8
4/20 04:50	79.1	↓-3.6
4/20 05:00	75.8	↓-3.3
4/20 05:10	72.9	↓-2.9
4/20 05:20	70.3	↓-2.6
4/20 05:30	68.0	↓-2.3
4/20 05:40	66.1	↓-1.9
4/20 05:50	64.6	↓-1.5
4/20 06:00	63.4	↓-1.2
4/20 06:10	62.7	↓-0.7
4/20 06:20	62.4	↓-0.3	干潮
4/20 06:30	62.4	0
4/20 06:40	62.9	↑0.5
4/20 06:50	63.7	↑0.8
4/20 07:00	65.0	↑1.3
4/20 07:10	66.6	↑1.6
4/20 07:20	68.6	↑2.0
4/20 07:30	70.9	↑2.3
4/20 07:40	73.5	↑2.6
4/20 07:50	76.5	↑3.0
4/20 08:00	79.7	↑3.2
4/20 08:10	83.1	↑3.4
4/20 08:20	86.8	↑3.7
4/20 08:30	90.7	↑3.9
4/20 08:40	94.8	↑4.1
4/20 08:50	99.0	↑4.2
4/20 09:00	103.3	↑4.3
4/20 09:10	107.7	↑4.4
4/20 09:20	112.1	↑4.4
4/20 09:30	116.5	↑4.4
4/20 09:40	120.8	↑4.3
4/20 09:50	125.1	↑4.3
4/20 10:00	129.3	↑4.2
4/20 10:10	133.4	↑4.1
4/20 10:20	137.3	↑3.9
4/20 10:30	141.0	↑3.7
4/20 10:40	144.5	↑3.5
4/20 10:50	147.7	↑3.2
4/20 11:00	150.7	↑3.0
4/20 11:10	153.3	↑2.6
4/20 11:20	155.7	↑2.4
4/20 11:30	157.7	↑2.0
4/20 11:40	159.3	↑1.6
4/20 11:50	160.6	↑1.3
4/20 12:00	161.5	↑0.9
4/20 12:10	162.0	↑0.5	満潮
4/20 12:20	162.1	↑0.1
4/20 12:30	161.8	↓-0.3
4/20 12:40	161.1	↓-0.7
4/20 12:50	160.0	↓-1.1
4/20 13:00	158.5	↓-1.5
4/20 13:10	156.6	↓-1.9
4/20 13:20	154.4	↓-2.2
4/20 13:30	151.8	↓-2.6
4/20 13:40	148.9	↓-2.9
4/20 13:50	145.6	↓-3.3
4/20 14:00	142.1	↓-3.5
4/20 14:10	138.2	↓-3.9
4/20 14:20	134.1	↓-4.1
4/20 14:30	129.8	↓-4.3
4/20 14:40	125.3	↓-4.5
4/20 14:50	120.6	↓-4.7
4/20 15:00	115.8	↓-4.8
4/20 15:10	110.9	↓-4.9
4/20 15:20	105.9	↓-5.0
4/20 15:30	100.9	↓-5.0
4/20 15:40	95.8	↓-5.1	最大潮位差
4/20 15:50	90.8	↓-5.0
4/20 16:00	85.9	↓-4.9
4/20 16:10	81.0	↓-4.9
4/20 16:20	76.3	↓-4.7
4/20 16:30	71.7	↓-4.6
4/20 16:40	67.3	↓-4.4
4/20 16:50	63.1	↓-4.2
4/20 17:00	59.2	↓-3.9
4/20 17:10	55.5	↓-3.7
4/20 17:20	52.2	↓-3.3
4/20 17:30	49.1	↓-3.1
4/20 17:40	46.4	↓-2.7
4/20 17:50	44.0	↓-2.4
4/20 18:00	42.0	↓-2.0
4/20 18:10	40.4	↓-1.6
4/20 18:20	39.2	↓-1.2
4/20 18:30	38.3	↓-0.9
4/20 18:40	37.9	↓-0.4	干潮
4/20 18:50	37.9	0
4/20 19:00	38.2	↑0.3
4/20 19:10	39.0	↑0.8
4/20 19:20	40.2	↑1.2
4/20 19:30	41.7	↑1.5
4/20 19:40	43.7	↑2.0
4/20 19:50	45.9	↑2.2
4/20 20:00	48.6	↑2.7
4/20 20:10	51.5	↑2.9
4/20 20:20	54.8	↑3.3
4/20 20:30	58.3	↑3.5
4/20 20:40	62.1	↑3.8
4/20 20:50	66.1	↑4.0
4/20 21:00	70.4	↑4.3
4/20 21:10	74.8	↑4.4
4/20 21:20	79.4	↑4.6
4/20 21:30	84.1	↑4.7
4/20 21:40	88.8	↑4.7
4/20 21:50	93.7	↑4.9
4/20 22:00	98.5	↑4.8
4/20 22:10	103.4	↑4.9
4/20 22:20	108.2	↑4.8
4/20 22:30	112.9	↑4.7
4/20 22:40	117.6	↑4.7
4/20 22:50	122.1	↑4.5
4/20 23:00	126.5	↑4.4
4/20 23:10	130.7	↑4.2
4/20 23:20	134.7	↑4.0
4/20 23:30	138.4	↑3.7
4/20 23:40	141.9	↑3.5
4/20 23:50	145.2	↑3.3