31 (金)	09:43	02:55	21:21	15:38
	327cm	32cm	297cm	118cm
中潮 出 07:12 入 17:07 出 04:07 入 14:32

粟島（香川）2021年12月31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
12/31 00:00	136.3	↓-10.6
12/31 00:10	125.9	↓-10.4
12/31 00:20	115.9	↓-10.0
12/31 00:30	106.3	↓-9.6
12/31 00:40	97.2	↓-9.1
12/31 00:50	88.5	↓-8.7
12/31 01:00	80.3	↓-8.2
12/31 01:10	72.7	↓-7.6
12/31 01:20	65.6	↓-7.1
12/31 01:30	59.1	↓-6.5
12/31 01:40	53.2	↓-5.9
12/31 01:50	47.9	↓-5.3
12/31 02:00	43.4	↓-4.5
12/31 02:10	39.5	↓-3.9
12/31 02:20	36.3	↓-3.2
12/31 02:30	34.0	↓-2.3
12/31 02:40	32.4	↓-1.6
12/31 02:50	31.6	↓-0.8	干潮
12/31 03:00	31.7	↑0.1
12/31 03:10	32.7	↑1.0
12/31 03:20	34.5	↑1.8
12/31 03:30	37.2	↑2.7
12/31 03:40	40.8	↑3.6
12/31 03:50	45.2	↑4.4
12/31 04:00	50.5	↑5.3
12/31 04:10	56.6	↑6.1
12/31 04:20	63.4	↑6.8
12/31 04:30	70.9	↑7.5
12/31 04:40	79.0	↑8.1
12/31 04:50	87.7	↑8.7
12/31 05:00	96.9	↑9.2
12/31 05:10	106.5	↑9.6
12/31 05:20	116.4	↑9.9
12/31 05:30	126.6	↑10.2
12/31 05:40	137.1	↑10.5
12/31 05:50	147.7	↑10.6
12/31 06:00	158.4	↑10.7
12/31 06:10	169.1	↑10.7
12/31 06:20	179.9	↑10.8
12/31 06:30	190.6	↑10.7
12/31 06:40	201.2	↑10.6
12/31 06:50	211.7	↑10.5
12/31 07:00	222.0	↑10.3
12/31 07:10	232.2	↑10.2
12/31 07:20	242.2	↑10.0
12/31 07:30	251.8	↑9.6
12/31 07:40	261.2	↑9.4
12/31 07:50	270.2	↑9.0
12/31 08:00	278.8	↑8.6
12/31 08:10	286.9	↑8.1
12/31 08:20	294.4	↑7.5
12/31 08:30	301.3	↑6.9
12/31 08:40	307.5	↑6.2
12/31 08:50	312.9	↑5.4
12/31 09:00	317.5	↑4.6
12/31 09:10	321.3	↑3.8
12/31 09:20	324.0	↑2.7
12/31 09:30	325.8	↑1.8
12/31 09:40	326.5	↑0.7	満潮
12/31 09:50	326.2	↓-0.3
12/31 10:00	324.9	↓-1.3
12/31 10:10	322.6	↓-2.3
12/31 10:20	319.2	↓-3.4
12/31 10:30	314.9	↓-4.3
12/31 10:40	309.8	↓-5.1
12/31 10:50	303.8	↓-6.0
12/31 11:00	297.1	↓-6.7
12/31 11:10	289.7	↓-7.4
12/31 11:20	281.8	↓-7.9
12/31 11:30	273.5	↓-8.3
12/31 11:40	264.8	↓-8.7
12/31 11:50	255.9	↓-8.9
12/31 12:00	246.8	↓-9.1
12/31 12:10	237.7	↓-9.1
12/31 12:20	228.6	↓-9.1
12/31 12:30	219.5	↓-9.1
12/31 12:40	210.6	↓-8.9
12/31 12:50	201.9	↓-8.7
12/31 13:00	193.4	↓-8.5
12/31 13:10	185.2	↓-8.2
12/31 13:20	177.3	↓-7.9
12/31 13:30	169.8	↓-7.5
12/31 13:40	162.6	↓-7.2
12/31 13:50	155.9	↓-6.7
12/31 14:00	149.5	↓-6.4
12/31 14:10	143.7	↓-5.8
12/31 14:20	138.3	↓-5.4
12/31 14:30	133.5	↓-4.8
12/31 14:40	129.2	↓-4.3
12/31 14:50	125.5	↓-3.7
12/31 15:00	122.5	↓-3.0
12/31 15:10	120.2	↓-2.3
12/31 15:20	118.5	↓-1.7
12/31 15:30	117.6	↓-0.9	干潮
12/31 15:40	117.5	↓-0.1
12/31 15:50	118.2	↑0.7
12/31 16:00	119.6	↑1.4
12/31 16:10	121.8	↑2.2
12/31 16:20	124.8	↑3.0
12/31 16:30	128.5	↑3.7
12/31 16:40	132.9	↑4.4
12/31 16:50	137.9	↑5.0
12/31 17:00	143.6	↑5.7
12/31 17:10	149.7	↑6.1
12/31 17:20	156.4	↑6.7
12/31 17:30	163.4	↑7.0
12/31 17:40	170.7	↑7.3
12/31 17:50	178.3	↑7.6
12/31 18:00	186.1	↑7.8
12/31 18:10	193.9	↑7.8
12/31 18:20	201.8	↑7.9
12/31 18:30	209.7	↑7.9
12/31 18:40	217.5	↑7.8
12/31 18:50	225.2	↑7.7
12/31 19:00	232.8	↑7.6
12/31 19:10	240.1	↑7.3
12/31 19:20	247.2	↑7.1
12/31 19:30	254.0	↑6.8
12/31 19:40	260.5	↑6.5
12/31 19:50	266.6	↑6.1
12/31 20:00	272.3	↑5.7
12/31 20:10	277.6	↑5.3
12/31 20:20	282.3	↑4.7
12/31 20:30	286.5	↑4.2
12/31 20:40	290.1	↑3.6
12/31 20:50	292.9	↑2.8
12/31 21:00	295.1	↑2.2
12/31 21:10	296.4	↑1.3
12/31 21:20	296.9	↑0.5	満潮
12/31 21:30	296.4	↓-0.5
12/31 21:40	295.0	↓-1.4
12/31 21:50	292.7	↓-2.3
12/31 22:00	289.3	↓-3.4
12/31 22:10	284.9	↓-4.4
12/31 22:20	279.5	↓-5.4
12/31 22:30	273.1	↓-6.4
12/31 22:40	265.8	↓-7.3
12/31 22:50	257.6	↓-8.2
12/31 23:00	248.6	↓-9.0
12/31 23:10	238.9	↓-9.7
12/31 23:20	228.5	↓-10.4
12/31 23:30	217.6	↓-10.9
12/31 23:40	206.3	↓-11.3
12/31 23:50	194.6	↓-11.7	最大潮位差