20 (火)	04:30	11:13	15:35	23:08
	286cm	163cm	235cm	83cm
小潮 出 05:29 入 18:42 出 11:06 入 01:07

粟島（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	116.3	↑7.3
4/20 00:10	124.3	↑8.0
4/20 00:20	132.7	↑8.4
4/20 00:30	141.6	↑8.9
4/20 00:40	150.8	↑9.2
4/20 00:50	160.3	↑9.5
4/20 01:00	170.0	↑9.7
4/20 01:10	179.7	↑9.7
4/20 01:20	189.5	↑9.8	最大潮位差
4/20 01:30	199.1	↑9.6
4/20 01:40	208.6	↑9.5
4/20 01:50	217.7	↑9.1
4/20 02:00	226.4	↑8.7
4/20 02:10	234.6	↑8.2
4/20 02:20	242.3	↑7.7
4/20 02:30	249.4	↑7.1
4/20 02:40	255.8	↑6.4
4/20 02:50	261.6	↑5.8
4/20 03:00	266.6	↑5.0
4/20 03:10	271.0	↑4.4
4/20 03:20	274.8	↑3.8
4/20 03:30	277.9	↑3.1
4/20 03:40	280.4	↑2.5
4/20 03:50	282.3	↑1.9
4/20 04:00	283.7	↑1.4
4/20 04:10	284.7	↑1.0
4/20 04:20	285.2	↑0.5	満潮
4/20 04:30	285.4	↑0.2	満潮
4/20 04:40	285.2	↓-0.2
4/20 04:50	284.6	↓-0.6
4/20 05:00	283.8	↓-0.8
4/20 05:10	282.6	↓-1.2
4/20 05:20	281.2	↓-1.4
4/20 05:30	279.5	↓-1.7
4/20 05:40	277.4	↓-2.1
4/20 05:50	275.1	↓-2.3
4/20 06:00	272.5	↓-2.6
4/20 06:10	269.6	↓-2.9
4/20 06:20	266.3	↓-3.3
4/20 06:30	262.8	↓-3.5
4/20 06:40	258.9	↓-3.9
4/20 06:50	254.7	↓-4.2
4/20 07:00	250.3	↓-4.4
4/20 07:10	245.7	↓-4.6
4/20 07:20	240.8	↓-4.9
4/20 07:30	235.8	↓-5.0
4/20 07:40	230.7	↓-5.1
4/20 07:50	225.5	↓-5.2
4/20 08:00	220.3	↓-5.2
4/20 08:10	215.1	↓-5.2
4/20 08:20	210.0	↓-5.1
4/20 08:30	205.1	↓-4.9
4/20 08:40	200.3	↓-4.8
4/20 08:50	195.7	↓-4.6
4/20 09:00	191.4	↓-4.3
4/20 09:10	187.3	↓-4.1
4/20 09:20	183.5	↓-3.8
4/20 09:30	180.0	↓-3.5
4/20 09:40	176.8	↓-3.2
4/20 09:50	173.9	↓-2.9
4/20 10:00	171.2	↓-2.7
4/20 10:10	169.0	↓-2.2
4/20 10:20	167.0	↓-2.0
4/20 10:30	165.3	↓-1.7
4/20 10:40	164.0	↓-1.3
4/20 10:50	163.1	↓-0.9
4/20 11:00	162.4	↓-0.7
4/20 11:10	162.2	↓-0.2	干潮
4/20 11:20	162.3	↑0.1
4/20 11:30	162.9	↑0.6
4/20 11:40	163.8	↑0.9
4/20 11:50	165.2	↑1.4
4/20 12:00	167.0	↑1.8
4/20 12:10	169.3	↑2.3
4/20 12:20	171.9	↑2.6
4/20 12:30	175.0	↑3.1
4/20 12:40	178.5	↑3.5
4/20 12:50	182.2	↑3.7
4/20 13:00	186.3	↑4.1
4/20 13:10	190.6	↑4.3
4/20 13:20	195.1	↑4.5
4/20 13:30	199.6	↑4.5
4/20 13:40	204.1	↑4.5
4/20 13:50	208.6	↑4.5
4/20 14:00	212.9	↑4.3
4/20 14:10	217.0	↑4.1
4/20 14:20	220.7	↑3.7
4/20 14:30	224.1	↑3.4
4/20 14:40	227.0	↑2.9
4/20 14:50	229.5	↑2.5
4/20 15:00	231.5	↑2.0
4/20 15:10	232.9	↑1.4
4/20 15:20	233.8	↑0.9
4/20 15:30	234.3	↑0.5	満潮
4/20 15:40	234.2	↓-0.1
4/20 15:50	233.7	↓-0.5
4/20 16:00	232.8	↓-0.9
4/20 16:10	231.5	↓-1.3
4/20 16:20	229.9	↓-1.6
4/20 16:30	228.0	↓-1.9
4/20 16:40	225.9	↓-2.1
4/20 16:50	223.6	↓-2.3
4/20 17:00	221.1	↓-2.5
4/20 17:10	218.5	↓-2.6
4/20 17:20	215.7	↓-2.8
4/20 17:30	212.9	↓-2.8
4/20 17:40	209.9	↓-3.0
4/20 17:50	206.8	↓-3.1
4/20 18:00	203.5	↓-3.3
4/20 18:10	200.1	↓-3.4
4/20 18:20	196.5	↓-3.6
4/20 18:30	192.8	↓-3.7
4/20 18:40	188.8	↓-4.0
4/20 18:50	184.5	↓-4.3
4/20 19:00	180.1	↓-4.4
4/20 19:10	175.4	↓-4.7
4/20 19:20	170.5	↓-4.9
4/20 19:30	165.4	↓-5.1
4/20 19:40	160.2	↓-5.2
4/20 19:50	154.8	↓-5.4
4/20 20:00	149.2	↓-5.6
4/20 20:10	143.7	↓-5.5
4/20 20:20	138.1	↓-5.6
4/20 20:30	132.6	↓-5.5
4/20 20:40	127.2	↓-5.4
4/20 20:50	122.0	↓-5.2
4/20 21:00	116.9	↓-5.1
4/20 21:10	112.1	↓-4.8
4/20 21:20	107.6	↓-4.5
4/20 21:30	103.3	↓-4.3
4/20 21:40	99.5	↓-3.8
4/20 21:50	96.0	↓-3.5
4/20 22:00	92.9	↓-3.1
4/20 22:10	90.1	↓-2.8
4/20 22:20	87.8	↓-2.3
4/20 22:30	86.0	↓-1.8
4/20 22:40	84.5	↓-1.5
4/20 22:50	83.5	↓-1.0
4/20 23:00	82.9	↓-0.6	干潮
4/20 23:10	82.8	↓-0.1
4/20 23:20	83.2	↑0.4
4/20 23:30	84.1	↑0.9
4/20 23:40	85.5	↑1.4
4/20 23:50	87.5	↑2.0