31 (金)	08:48	01:27	20:12	14:04
	326cm	30cm	299cm	119cm
中潮 出 07:15 入 17:11 出 04:10 入 14:35

小島（愛媛）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	65.3	↓-8.5
12/31 00:10	57.6	↓-7.7
12/31 00:20	50.7	↓-6.9
12/31 00:30	44.7	↓-6.0
12/31 00:40	39.7	↓-5.0
12/31 00:50	35.7	↓-4.0
12/31 01:00	32.7	↓-3.0
12/31 01:10	30.7	↓-2.0
12/31 01:20	29.6	↓-1.1	干潮
12/31 01:30	29.6	0
12/31 01:40	30.4	↑0.8
12/31 01:50	32.2	↑1.8
12/31 02:00	34.8	↑2.6
12/31 02:10	38.3	↑3.5
12/31 02:20	42.5	↑4.2
12/31 02:30	47.4	↑4.9
12/31 02:40	52.9	↑5.5
12/31 02:50	59.0	↑6.1
12/31 03:00	65.6	↑6.6
12/31 03:10	72.7	↑7.1
12/31 03:20	80.2	↑7.5
12/31 03:30	88.1	↑7.9
12/31 03:40	96.3	↑8.2
12/31 03:50	104.7	↑8.4
12/31 04:00	113.5	↑8.8
12/31 04:10	122.4	↑8.9
12/31 04:20	131.6	↑9.2
12/31 04:30	140.9	↑9.3
12/31 04:40	150.3	↑9.4
12/31 04:50	159.8	↑9.5
12/31 05:00	169.5	↑9.7
12/31 05:10	179.2	↑9.7
12/31 05:20	188.9	↑9.7
12/31 05:30	198.6	↑9.7
12/31 05:40	208.4	↑9.8
12/31 05:50	218.0	↑9.6
12/31 06:00	227.5	↑9.5
12/31 06:10	236.9	↑9.4
12/31 06:20	246.1	↑9.2
12/31 06:30	255.1	↑9.0
12/31 06:40	263.8	↑8.7
12/31 06:50	272.1	↑8.3
12/31 07:00	280.1	↑8.0
12/31 07:10	287.6	↑7.5
12/31 07:20	294.5	↑6.9
12/31 07:30	301.0	↑6.5
12/31 07:40	306.8	↑5.8
12/31 07:50	311.9	↑5.1
12/31 08:00	316.3	↑4.4
12/31 08:10	319.9	↑3.6
12/31 08:20	322.7	↑2.8
12/31 08:30	324.7	↑2.0
12/31 08:40	325.8	↑1.1	満潮
12/31 08:50	325.9	↑0.1
12/31 09:00	325.1	↓-0.8
12/31 09:10	323.3	↓-1.8
12/31 09:20	320.6	↓-2.7
12/31 09:30	317.0	↓-3.6
12/31 09:40	312.4	↓-4.6
12/31 09:50	306.8	↓-5.6
12/31 10:00	300.5	↓-6.3
12/31 10:10	293.3	↓-7.2
12/31 10:20	285.3	↓-8.0
12/31 10:30	276.7	↓-8.6
12/31 10:40	267.4	↓-9.3
12/31 10:50	257.7	↓-9.7
12/31 11:00	247.6	↓-10.1
12/31 11:10	237.2	↓-10.4
12/31 11:20	226.6	↓-10.6
12/31 11:30	215.9	↓-10.7
12/31 11:40	205.3	↓-10.6
12/31 11:50	194.9	↓-10.4
12/31 12:00	184.8	↓-10.1
12/31 12:10	175.2	↓-9.6
12/31 12:20	166.0	↓-9.2
12/31 12:30	157.5	↓-8.5
12/31 12:40	149.7	↓-7.8
12/31 12:50	142.6	↓-7.1
12/31 13:00	136.4	↓-6.2
12/31 13:10	131.1	↓-5.3
12/31 13:20	126.7	↓-4.4
12/31 13:30	123.2	↓-3.5
12/31 13:40	120.7	↓-2.5
12/31 13:50	119.1	↓-1.6
12/31 14:00	118.5	↓-0.6	干潮
12/31 14:10	118.7	↑0.2
12/31 14:20	119.7	↑1.0
12/31 14:30	121.5	↑1.8
12/31 14:40	124.1	↑2.6
12/31 14:50	127.3	↑3.2
12/31 15:00	131.2	↑3.9
12/31 15:10	135.6	↑4.4
12/31 15:20	140.5	↑4.9
12/31 15:30	145.8	↑5.3
12/31 15:40	151.5	↑5.7
12/31 15:50	157.5	↑6.0
12/31 16:00	163.8	↑6.3
12/31 16:10	170.3	↑6.5
12/31 16:20	177.0	↑6.7
12/31 16:30	183.9	↑6.9
12/31 16:40	190.8	↑6.9
12/31 16:50	197.9	↑7.1
12/31 17:00	205.0	↑7.1
12/31 17:10	212.0	↑7.0
12/31 17:20	219.1	↑7.1
12/31 17:30	226.1	↑7.0
12/31 17:40	233.1	↑7.0
12/31 17:50	239.9	↑6.8
12/31 18:00	246.5	↑6.6
12/31 18:10	253.0	↑6.5
12/31 18:20	259.2	↑6.2
12/31 18:30	265.1	↑5.9
12/31 18:40	270.7	↑5.6
12/31 18:50	276.0	↑5.3
12/31 19:00	280.8	↑4.8
12/31 19:10	285.1	↑4.3
12/31 19:20	288.9	↑3.8
12/31 19:30	292.2	↑3.3
12/31 19:40	294.8	↑2.6
12/31 19:50	296.8	↑2.0
12/31 20:00	298.0	↑1.2
12/31 20:10	298.5	↑0.5	満潮
12/31 20:20	298.2	↓-0.3
12/31 20:30	297.1	↓-1.1
12/31 20:40	295.1	↓-2.0
12/31 20:50	292.3	↓-2.8
12/31 21:00	288.5	↓-3.8
12/31 21:10	283.8	↓-4.7
12/31 21:20	278.2	↓-5.6
12/31 21:30	271.7	↓-6.5
12/31 21:40	264.3	↓-7.4
12/31 21:50	256.0	↓-8.3
12/31 22:00	246.9	↓-9.1
12/31 22:10	237.0	↓-9.9
12/31 22:20	226.3	↓-10.7
12/31 22:30	215.0	↓-11.3
12/31 22:40	203.1	↓-11.9
12/31 22:50	190.6	↓-12.5
12/31 23:00	177.8	↓-12.8
12/31 23:10	164.6	↓-13.2
12/31 23:20	151.3	↓-13.3
12/31 23:30	137.9	↓-13.4	最大潮位差
12/31 23:40	124.5	↓-13.4	最大潮位差
12/31 23:50	111.4	↓-13.1