20 (火)	04:35	11:11	15:57	22:28
	260cm	136cm	188cm	67cm
小潮 出 05:29 入 18:42 出 11:06 入 01:07

与島（香川）2021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	115.6	↑7.3
4/20 00:10	123.1	↑7.5
4/20 00:20	130.7	↑7.6
4/20 00:30	138.6	↑7.9	最大潮位差
4/20 00:40	146.5	↑7.9	最大潮位差
4/20 00:50	154.4	↑7.9	最大潮位差
4/20 01:00	162.2	↑7.8
4/20 01:10	170.0	↑7.8
4/20 01:20	177.7	↑7.7
4/20 01:30	185.1	↑7.4
4/20 01:40	192.4	↑7.3
4/20 01:50	199.3	↑6.9
4/20 02:00	206.0	↑6.7
4/20 02:10	212.4	↑6.4
4/20 02:20	218.4	↑6.0
4/20 02:30	224.1	↑5.7
4/20 02:40	229.4	↑5.3
4/20 02:50	234.3	↑4.9
4/20 03:00	238.8	↑4.5
4/20 03:10	242.9	↑4.1
4/20 03:20	246.6	↑3.7
4/20 03:30	249.8	↑3.2
4/20 03:40	252.6	↑2.8
4/20 03:50	254.9	↑2.3
4/20 04:00	256.8	↑1.9
4/20 04:10	258.2	↑1.4
4/20 04:20	259.1	↑0.9
4/20 04:30	259.6	↑0.5	満潮
4/20 04:40	259.6	0
4/20 04:50	259.1	↓-0.5
4/20 05:00	258.1	↓-1.0
4/20 05:10	256.6	↓-1.5
4/20 05:20	254.7	↓-1.9
4/20 05:30	252.4	↓-2.3
4/20 05:40	249.7	↓-2.7
4/20 05:50	246.7	↓-3.0
4/20 06:00	243.2	↓-3.5
4/20 06:10	239.5	↓-3.7
4/20 06:20	235.5	↓-4.0
4/20 06:30	231.3	↓-4.2
4/20 06:40	226.9	↓-4.4
4/20 06:50	222.4	↓-4.5
4/20 07:00	217.7	↓-4.7
4/20 07:10	212.9	↓-4.8
4/20 07:20	208.1	↓-4.8
4/20 07:30	203.3	↓-4.8
4/20 07:40	198.6	↓-4.7
4/20 07:50	193.8	↓-4.8
4/20 08:00	189.1	↓-4.7
4/20 08:10	184.5	↓-4.6
4/20 08:20	180.0	↓-4.5
4/20 08:30	175.6	↓-4.4
4/20 08:40	171.4	↓-4.2
4/20 08:50	167.3	↓-4.1
4/20 09:00	163.3	↓-4.0
4/20 09:10	159.6	↓-3.7
4/20 09:20	156.0	↓-3.6
4/20 09:30	152.6	↓-3.4
4/20 09:40	149.5	↓-3.1
4/20 09:50	146.7	↓-2.8
4/20 10:00	144.1	↓-2.6
4/20 10:10	141.8	↓-2.3
4/20 10:20	139.9	↓-1.9
4/20 10:30	138.2	↓-1.7
4/20 10:40	137.0	↓-1.2
4/20 10:50	136.0	↓-1.0
4/20 11:00	135.5	↓-0.5
4/20 11:10	135.3	↓-0.2	干潮
4/20 11:20	135.5	↑0.2
4/20 11:30	136.0	↑0.5
4/20 11:40	136.9	↑0.9
4/20 11:50	138.2	↑1.3
4/20 12:00	139.7	↑1.5
4/20 12:10	141.5	↑1.8
4/20 12:20	143.6	↑2.1
4/20 12:30	145.9	↑2.3
4/20 12:40	148.4	↑2.5
4/20 12:50	151.0	↑2.6
4/20 13:00	153.7	↑2.7
4/20 13:10	156.5	↑2.8
4/20 13:20	159.4	↑2.9
4/20 13:30	162.2	↑2.8
4/20 13:40	165.0	↑2.8
4/20 13:50	167.7	↑2.7
4/20 14:00	170.4	↑2.7
4/20 14:10	172.9	↑2.5
4/20 14:20	175.4	↑2.5
4/20 14:30	177.6	↑2.2
4/20 14:40	179.7	↑2.1
4/20 14:50	181.5	↑1.8
4/20 15:00	183.2	↑1.7
4/20 15:10	184.6	↑1.4
4/20 15:20	185.8	↑1.2
4/20 15:30	186.7	↑0.9
4/20 15:40	187.4	↑0.7
4/20 15:50	187.7	↑0.3	満潮
4/20 16:00	187.7	0
4/20 16:10	187.4	↓-0.3
4/20 16:20	186.8	↓-0.6
4/20 16:30	185.8	↓-1.0
4/20 16:40	184.5	↓-1.3
4/20 16:50	182.8	↓-1.7
4/20 17:00	180.8	↓-2.0
4/20 17:10	178.4	↓-2.4
4/20 17:20	175.7	↓-2.7
4/20 17:30	172.6	↓-3.1
4/20 17:40	169.2	↓-3.4
4/20 17:50	165.5	↓-3.7
4/20 18:00	161.6	↓-3.9
4/20 18:10	157.4	↓-4.2
4/20 18:20	153.0	↓-4.4
4/20 18:30	148.5	↓-4.5
4/20 18:40	143.8	↓-4.7
4/20 18:50	139.0	↓-4.8
4/20 19:00	134.1	↓-4.9
4/20 19:10	129.2	↓-4.9
4/20 19:20	124.3	↓-4.9
4/20 19:30	119.4	↓-4.9
4/20 19:40	114.6	↓-4.8
4/20 19:50	109.9	↓-4.7
4/20 20:00	105.3	↓-4.6
4/20 20:10	100.9	↓-4.4
4/20 20:20	96.6	↓-4.3
4/20 20:30	92.6	↓-4.0
4/20 20:40	88.7	↓-3.9
4/20 20:50	85.1	↓-3.6
4/20 21:00	81.8	↓-3.3
4/20 21:10	78.7	↓-3.1
4/20 21:20	75.9	↓-2.8
4/20 21:30	73.5	↓-2.4
4/20 21:40	71.4	↓-2.1
4/20 21:50	69.6	↓-1.8
4/20 22:00	68.3	↓-1.3
4/20 22:10	67.3	↓-1.0
4/20 22:20	66.8	↓-0.5	干潮
4/20 22:30	66.7	↓-0.1
4/20 22:40	67.1	↑0.4
4/20 22:50	67.9	↑0.8
4/20 23:00	69.2	↑1.3
4/20 23:10	70.9	↑1.7
4/20 23:20	73.2	↑2.3
4/20 23:30	75.8	↑2.6
4/20 23:40	79.0	↑3.2
4/20 23:50	82.5	↑3.5