21 (金)	00:18	06:25	12:22	18:36
	204cm	68cm	188cm	53cm
中潮 出 05:11 入 19:39 出 23:30 入 10:56

島山（長崎）2030年06月21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
6/21 00:00	202.7	↑1.1
6/21 00:10	203.4	↑0.7	満潮
6/21 00:20	203.5	↑0.1
6/21 00:30	203.1	↓-0.4
6/21 00:40	202.1	↓-1.0
6/21 00:50	200.7	↓-1.4
6/21 01:00	198.8	↓-1.9
6/21 01:10	196.4	↓-2.4
6/21 01:20	193.5	↓-2.9
6/21 01:30	190.2	↓-3.3
6/21 01:40	186.5	↓-3.7
6/21 01:50	182.4	↓-4.1
6/21 02:00	177.9	↓-4.5
6/21 02:10	173.2	↓-4.7
6/21 02:20	168.2	↓-5.0
6/21 02:30	162.9	↓-5.3
6/21 02:40	157.5	↓-5.4
6/21 02:50	151.9	↓-5.6
6/21 03:00	146.1	↓-5.8
6/21 03:10	140.3	↓-5.8
6/21 03:20	134.5	↓-5.8
6/21 03:30	128.7	↓-5.8
6/21 03:40	122.9	↓-5.8
6/21 03:50	117.2	↓-5.7
6/21 04:00	111.7	↓-5.5
6/21 04:10	106.3	↓-5.4
6/21 04:20	101.2	↓-5.1
6/21 04:30	96.3	↓-4.9
6/21 04:40	91.7	↓-4.6
6/21 04:50	87.4	↓-4.3
6/21 05:00	83.5	↓-3.9
6/21 05:10	79.9	↓-3.6
6/21 05:20	76.8	↓-3.1
6/21 05:30	74.0	↓-2.8
6/21 05:40	71.7	↓-2.3
6/21 05:50	69.9	↓-1.8
6/21 06:00	68.5	↓-1.4
6/21 06:10	67.6	↓-0.9
6/21 06:20	67.2	↓-0.4	干潮
6/21 06:30	67.2	0
6/21 06:40	67.8	↑0.6
6/21 06:50	68.8	↑1.0
6/21 07:00	70.2	↑1.4
6/21 07:10	72.1	↑1.9
6/21 07:20	74.4	↑2.3
6/21 07:30	77.2	↑2.8
6/21 07:40	80.3	↑3.1
6/21 07:50	83.8	↑3.5
6/21 08:00	87.6	↑3.8
6/21 08:10	91.8	↑4.2
6/21 08:20	96.2	↑4.4
6/21 08:30	100.8	↑4.6
6/21 08:40	105.7	↑4.9
6/21 08:50	110.7	↑5.0
6/21 09:00	115.9	↑5.2
6/21 09:10	121.1	↑5.2
6/21 09:20	126.4	↑5.3
6/21 09:30	131.7	↑5.3
6/21 09:40	136.9	↑5.2
6/21 09:50	142.1	↑5.2
6/21 10:00	147.1	↑5.0
6/21 10:10	152.1	↑5.0
6/21 10:20	156.8	↑4.7
6/21 10:30	161.3	↑4.5
6/21 10:40	165.5	↑4.2
6/21 10:50	169.4	↑3.9
6/21 11:00	173.1	↑3.7
6/21 11:10	176.3	↑3.2
6/21 11:20	179.2	↑2.9
6/21 11:30	181.7	↑2.5
6/21 11:40	183.8	↑2.1
6/21 11:50	185.4	↑1.6
6/21 12:00	186.6	↑1.2
6/21 12:10	187.4	↑0.8
6/21 12:20	187.6	↑0.2	満潮
6/21 12:30	187.4	↓-0.2
6/21 12:40	186.8	↓-0.6
6/21 12:50	185.6	↓-1.2
6/21 13:00	184.1	↓-1.5
6/21 13:10	182.0	↓-2.1
6/21 13:20	179.5	↓-2.5
6/21 13:30	176.7	↓-2.8
6/21 13:40	173.4	↓-3.3
6/21 13:50	169.7	↓-3.7
6/21 14:00	165.7	↓-4.0
6/21 14:10	161.4	↓-4.3
6/21 14:20	156.7	↓-4.7
6/21 14:30	151.9	↓-4.8
6/21 14:40	146.7	↓-5.2
6/21 14:50	141.4	↓-5.3
6/21 15:00	136.0	↓-5.4
6/21 15:10	130.4	↓-5.6
6/21 15:20	124.8	↓-5.6
6/21 15:30	119.1	↓-5.7
6/21 15:40	113.4	↓-5.7
6/21 15:50	107.8	↓-5.6
6/21 16:00	102.2	↓-5.6
6/21 16:10	96.8	↓-5.4
6/21 16:20	91.6	↓-5.2
6/21 16:30	86.5	↓-5.1
6/21 16:40	81.7	↓-4.8
6/21 16:50	77.1	↓-4.6
6/21 17:00	72.8	↓-4.3
6/21 17:10	68.9	↓-3.9
6/21 17:20	65.4	↓-3.5
6/21 17:30	62.2	↓-3.2
6/21 17:40	59.4	↓-2.8
6/21 17:50	57.1	↓-2.3
6/21 18:00	55.1	↓-2.0
6/21 18:10	53.7	↓-1.4
6/21 18:20	52.7	↓-1.0
6/21 18:30	52.2	↓-0.5	干潮
6/21 18:40	52.2	0
6/21 18:50	52.7	↑0.5
6/21 19:00	53.6	↑0.9
6/21 19:10	55.0	↑1.4
6/21 19:20	56.9	↑1.9
6/21 19:30	59.2	↑2.3
6/21 19:40	61.9	↑2.7
6/21 19:50	65.1	↑3.2
6/21 20:00	68.7	↑3.6
6/21 20:10	72.6	↑3.9
6/21 20:20	76.9	↑4.3
6/21 20:30	81.5	↑4.6
6/21 20:40	86.3	↑4.8
6/21 20:50	91.4	↑5.1
6/21 21:00	96.8	↑5.4
6/21 21:10	102.3	↑5.5
6/21 21:20	108.0	↑5.7
6/21 21:30	113.7	↑5.7
6/21 21:40	119.5	↑5.8
6/21 21:50	125.4	↑5.9	最大潮位差
6/21 22:00	131.2	↑5.8
6/21 22:10	137.0	↑5.8
6/21 22:20	142.7	↑5.7
6/21 22:30	148.2	↑5.5
6/21 22:40	153.6	↑5.4
6/21 22:50	158.8	↑5.2
6/21 23:00	163.8	↑5.0
6/21 23:10	168.5	↑4.7
6/21 23:20	172.8	↑4.3
6/21 23:30	176.9	↑4.1
6/21 23:40	180.6	↑3.7
6/21 23:50	183.9	↑3.3