31 (金)	03:30	08:42	14:08	21:17
	167cm	105cm	183cm	7cm
中潮 出 06:46 入 16:36 出 03:40 入 13:59

千葉灯標（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	103.9	↑5.2
12/31 00:10	109.0	↑5.1
12/31 00:20	114.0	↑5.0
12/31 00:30	118.9	↑4.9
12/31 00:40	123.6	↑4.7
12/31 00:50	128.2	↑4.6
12/31 01:00	132.5	↑4.3
12/31 01:10	136.7	↑4.2
12/31 01:20	140.7	↑4.0
12/31 01:30	144.4	↑3.7
12/31 01:40	147.9	↑3.5
12/31 01:50	151.1	↑3.2
12/31 02:00	154.0	↑2.9
12/31 02:10	156.7	↑2.7
12/31 02:20	159.0	↑2.3
12/31 02:30	161.1	↑2.1
12/31 02:40	162.8	↑1.7
12/31 02:50	164.2	↑1.4
12/31 03:00	165.3	↑1.1
12/31 03:10	166.1	↑0.8
12/31 03:20	166.6	↑0.5	満潮
12/31 03:30	166.7	↑0.1	満潮
12/31 03:40	166.5	↓-0.2
12/31 03:50	166.0	↓-0.5
12/31 04:00	165.3	↓-0.7
12/31 04:10	164.2	↓-1.1
12/31 04:20	162.8	↓-1.4
12/31 04:30	161.2	↓-1.6
12/31 04:40	159.3	↓-1.9
12/31 04:50	157.2	↓-2.1
12/31 05:00	154.9	↓-2.3
12/31 05:10	152.5	↓-2.4
12/31 05:20	149.8	↓-2.7
12/31 05:30	147.0	↓-2.8
12/31 05:40	144.1	↓-2.9
12/31 05:50	141.1	↓-3.0
12/31 06:00	138.0	↓-3.1
12/31 06:10	135.0	↓-3.0
12/31 06:20	131.9	↓-3.1
12/31 06:30	128.8	↓-3.1
12/31 06:40	125.8	↓-3.0
12/31 06:50	122.8	↓-3.0
12/31 07:00	120.0	↓-2.8
12/31 07:10	117.3	↓-2.7
12/31 07:20	114.8	↓-2.5
12/31 07:30	112.5	↓-2.3
12/31 07:40	110.4	↓-2.1
12/31 07:50	108.6	↓-1.8
12/31 08:00	107.0	↓-1.6
12/31 08:10	105.8	↓-1.2
12/31 08:20	104.9	↓-0.9
12/31 08:30	104.3	↓-0.6
12/31 08:40	104.1	↓-0.2	干潮
12/31 08:50	104.2	↑0.1
12/31 09:00	104.7	↑0.5
12/31 09:10	105.5	↑0.8
12/31 09:20	106.8	↑1.3
12/31 09:30	108.3	↑1.5
12/31 09:40	110.2	↑1.9
12/31 09:50	112.4	↑2.2
12/31 10:00	114.9	↑2.5
12/31 10:10	117.7	↑2.8
12/31 10:20	120.7	↑3.0
12/31 10:30	124.0	↑3.3
12/31 10:40	127.4	↑3.4
12/31 10:50	131.0	↑3.6
12/31 11:00	134.6	↑3.6
12/31 11:10	138.4	↑3.8
12/31 11:20	142.1	↑3.7
12/31 11:30	145.9	↑3.8
12/31 11:40	149.7	↑3.8
12/31 11:50	153.3	↑3.6
12/31 12:00	156.9	↑3.6
12/31 12:10	160.3	↑3.4
12/31 12:20	163.5	↑3.2
12/31 12:30	166.6	↑3.1
12/31 12:40	169.5	↑2.9
12/31 12:50	172.1	↑2.6
12/31 13:00	174.4	↑2.3
12/31 13:10	176.5	↑2.1
12/31 13:20	178.2	↑1.7
12/31 13:30	179.7	↑1.5
12/31 13:40	180.8	↑1.1
12/31 13:50	181.6	↑0.8
12/31 14:00	182.0	↑0.4	満潮
12/31 14:10	182.1	↑0.1
12/31 14:20	181.8	↓-0.3
12/31 14:30	181.1	↓-0.7
12/31 14:40	180.0	↓-1.1
12/31 14:50	178.5	↓-1.5
12/31 15:00	176.7	↓-1.8
12/31 15:10	174.5	↓-2.2
12/31 15:20	171.9	↓-2.6
12/31 15:30	168.9	↓-3.0
12/31 15:40	165.5	↓-3.4
12/31 15:50	161.8	↓-3.7
12/31 16:00	157.7	↓-4.1
12/31 16:10	153.3	↓-4.4
12/31 16:20	148.6	↓-4.7
12/31 16:30	143.6	↓-5.0
12/31 16:40	138.3	↓-5.3
12/31 16:50	132.7	↓-5.6
12/31 17:00	127.0	↓-5.7
12/31 17:10	121.0	↓-6.0
12/31 17:20	114.9	↓-6.1
12/31 17:30	108.6	↓-6.3
12/31 17:40	102.2	↓-6.4
12/31 17:50	95.8	↓-6.4
12/31 18:00	89.3	↓-6.5	最大潮位差
12/31 18:10	82.8	↓-6.5	最大潮位差
12/31 18:20	76.3	↓-6.5	最大潮位差
12/31 18:30	70.0	↓-6.3
12/31 18:40	63.7	↓-6.3
12/31 18:50	57.5	↓-6.2
12/31 19:00	51.6	↓-5.9
12/31 19:10	45.9	↓-5.7
12/31 19:20	40.4	↓-5.5
12/31 19:30	35.2	↓-5.2
12/31 19:40	30.4	↓-4.8
12/31 19:50	25.9	↓-4.5
12/31 20:00	21.8	↓-4.1
12/31 20:10	18.2	↓-3.6
12/31 20:20	15.0	↓-3.2
12/31 20:30	12.3	↓-2.7
12/31 20:40	10.1	↓-2.2
12/31 20:50	8.4	↓-1.7
12/31 21:00	7.2	↓-1.2
12/31 21:10	6.6	↓-0.6	干潮
12/31 21:20	6.6	0
12/31 21:30	7.1	↑0.5
12/31 21:40	8.2	↑1.1
12/31 21:50	9.8	↑1.6
12/31 22:00	11.9	↑2.1
12/31 22:10	14.5	↑2.6
12/31 22:20	17.6	↑3.1
12/31 22:30	21.2	↑3.6
12/31 22:40	25.2	↑4.0
12/31 22:50	29.6	↑4.4
12/31 23:00	34.4	↑4.8
12/31 23:10	39.5	↑5.1
12/31 23:20	44.9	↑5.4
12/31 23:30	50.5	↑5.6
12/31 23:40	56.3	↑5.8
12/31 23:50	62.3	↑6.0