31 (金)	03:24	08:20	13:59	21:16
	134cm	97cm	157cm	12cm
中潮 出 06:48 入 16:42 出 03:42 入 14:05

館山（千葉）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	86.4	↑3.9
12/31 00:10	90.2	↑3.8
12/31 00:20	94.0	↑3.8
12/31 00:30	97.7	↑3.7
12/31 00:40	101.4	↑3.7
12/31 00:50	104.9	↑3.5
12/31 01:00	108.3	↑3.4
12/31 01:10	111.5	↑3.2
12/31 01:20	114.6	↑3.1
12/31 01:30	117.5	↑2.9
12/31 01:40	120.2	↑2.7
12/31 01:50	122.7	↑2.5
12/31 02:00	125.0	↑2.3
12/31 02:10	127.0	↑2.0
12/31 02:20	128.8	↑1.8
12/31 02:30	130.3	↑1.5
12/31 02:40	131.5	↑1.2
12/31 02:50	132.5	↑1.0
12/31 03:00	133.3	↑0.8
12/31 03:10	133.7	↑0.4
12/31 03:20	133.9	↑0.2	満潮
12/31 03:30	133.9	0
12/31 03:40	133.6	↓-0.3
12/31 03:50	133.1	↓-0.5
12/31 04:00	132.3	↓-0.8
12/31 04:10	131.4	↓-0.9
12/31 04:20	130.3	↓-1.1
12/31 04:30	129.0	↓-1.3
12/31 04:40	127.6	↓-1.4
12/31 04:50	126.1	↓-1.5
12/31 05:00	124.4	↓-1.7
12/31 05:10	122.7	↓-1.7
12/31 05:20	120.9	↓-1.8
12/31 05:30	119.0	↓-1.9
12/31 05:40	117.1	↓-1.9
12/31 05:50	115.2	↓-1.9
12/31 06:00	113.3	↓-1.9
12/31 06:10	111.4	↓-1.9
12/31 06:20	109.5	↓-1.9
12/31 06:30	107.7	↓-1.8
12/31 06:40	106.0	↓-1.7
12/31 06:50	104.3	↓-1.7
12/31 07:00	102.7	↓-1.6
12/31 07:10	101.3	↓-1.4
12/31 07:20	100.0	↓-1.3
12/31 07:30	98.9	↓-1.1
12/31 07:40	97.9	↓-1.0
12/31 07:50	97.2	↓-0.7
12/31 08:00	96.6	↓-0.6
12/31 08:10	96.3	↓-0.3	干潮
12/31 08:20	96.2	↓-0.1	干潮
12/31 08:30	96.4	↑0.2
12/31 08:40	96.7	↑0.3
12/31 08:50	97.4	↑0.7
12/31 09:00	98.3	↑0.9
12/31 09:10	99.4	↑1.1
12/31 09:20	100.8	↑1.4
12/31 09:30	102.4	↑1.6
12/31 09:40	104.2	↑1.8
12/31 09:50	106.2	↑2.0
12/31 10:00	108.4	↑2.2
12/31 10:10	110.7	↑2.3
12/31 10:20	113.2	↑2.5
12/31 10:30	115.8	↑2.6
12/31 10:40	118.4	↑2.6
12/31 10:50	121.2	↑2.8
12/31 11:00	123.9	↑2.7
12/31 11:10	126.7	↑2.8
12/31 11:20	129.5	↑2.8
12/31 11:30	132.2	↑2.7
12/31 11:40	134.9	↑2.7
12/31 11:50	137.6	↑2.7
12/31 12:00	140.1	↑2.5
12/31 12:10	142.5	↑2.4
12/31 12:20	144.8	↑2.3
12/31 12:30	146.9	↑2.1
12/31 12:40	148.9	↑2.0
12/31 12:50	150.7	↑1.8
12/31 13:00	152.3	↑1.6
12/31 13:10	153.7	↑1.4
12/31 13:20	154.9	↑1.2
12/31 13:30	155.8	↑0.9
12/31 13:40	156.5	↑0.7
12/31 13:50	156.9	↑0.4	満潮
12/31 14:00	156.9	0
12/31 14:10	156.7	↓-0.2
12/31 14:20	156.2	↓-0.5
12/31 14:30	155.4	↓-0.8
12/31 14:40	154.2	↓-1.2
12/31 14:50	152.7	↓-1.5
12/31 15:00	150.9	↓-1.8
12/31 15:10	148.7	↓-2.2
12/31 15:20	146.2	↓-2.5
12/31 15:30	143.4	↓-2.8
12/31 15:40	140.3	↓-3.1
12/31 15:50	136.8	↓-3.5
12/31 16:00	133.1	↓-3.7
12/31 16:10	129.2	↓-3.9
12/31 16:20	125.0	↓-4.2
12/31 16:30	120.6	↓-4.4
12/31 16:40	116.0	↓-4.6
12/31 16:50	111.2	↓-4.8
12/31 17:00	106.3	↓-4.9
12/31 17:10	101.3	↓-5.0
12/31 17:20	96.1	↓-5.2
12/31 17:30	90.9	↓-5.2
12/31 17:40	85.7	↓-5.2
12/31 17:50	80.5	↓-5.2
12/31 18:00	75.2	↓-5.3	最大潮位差
12/31 18:10	70.0	↓-5.2
12/31 18:20	64.9	↓-5.1
12/31 18:30	59.9	↓-5.0
12/31 18:40	54.9	↓-5.0
12/31 18:50	50.2	↓-4.7
12/31 19:00	45.5	↓-4.7
12/31 19:10	41.1	↓-4.4
12/31 19:20	36.9	↓-4.2
12/31 19:30	32.9	↓-4.0
12/31 19:40	29.2	↓-3.7
12/31 19:50	25.8	↓-3.4
12/31 20:00	22.7	↓-3.1
12/31 20:10	19.9	↓-2.8
12/31 20:20	17.5	↓-2.4
12/31 20:30	15.4	↓-2.1
12/31 20:40	13.8	↓-1.6
12/31 20:50	12.5	↓-1.3
12/31 21:00	11.7	↓-0.8
12/31 21:10	11.3	↓-0.4	干潮
12/31 21:20	11.3	0
12/31 21:30	11.7	↑0.4
12/31 21:40	12.6	↑0.9
12/31 21:50	13.8	↑1.2
12/31 22:00	15.4	↑1.6
12/31 22:10	17.4	↑2.0
12/31 22:20	19.8	↑2.4
12/31 22:30	22.5	↑2.7
12/31 22:40	25.5	↑3.0
12/31 22:50	28.8	↑3.3
12/31 23:00	32.4	↑3.6
12/31 23:10	36.3	↑3.9
12/31 23:20	40.3	↑4.0
12/31 23:30	44.5	↑4.2
12/31 23:40	48.9	↑4.4
12/31 23:50	53.5	↑4.6