20 (日)	03:55	07:45	11:52	20:33
	142cm	133cm	144cm	43cm
長潮 出 06:20 入 17:24 出 02:59 入 12:33

千葉灯標（千葉）2028年02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
2/20 00:00	109.5	↑2.6
2/20 00:10	112.1	↑2.6
2/20 00:20	114.6	↑2.5
2/20 00:30	117.0	↑2.4
2/20 00:40	119.3	↑2.3
2/20 00:50	121.5	↑2.2
2/20 01:00	123.7	↑2.2
2/20 01:10	125.7	↑2.0
2/20 01:20	127.6	↑1.9
2/20 01:30	129.5	↑1.9
2/20 01:40	131.1	↑1.6
2/20 01:50	132.7	↑1.6
2/20 02:00	134.2	↑1.5
2/20 02:10	135.5	↑1.3
2/20 02:20	136.7	↑1.2
2/20 02:30	137.7	↑1.0
2/20 02:40	138.7	↑1.0
2/20 02:50	139.5	↑0.8
2/20 03:00	140.2	↑0.7
2/20 03:10	140.7	↑0.5
2/20 03:20	141.2	↑0.5
2/20 03:30	141.5	↑0.3
2/20 03:40	141.7	↑0.2
2/20 03:50	141.8	↑0.1	満潮
2/20 04:00	141.8	0
2/20 04:10	141.7	↓-0.1
2/20 04:20	141.5	↓-0.2
2/20 04:30	141.2	↓-0.3
2/20 04:40	140.8	↓-0.4
2/20 04:50	140.4	↓-0.4
2/20 05:00	139.9	↓-0.5
2/20 05:10	139.4	↓-0.5
2/20 05:20	138.8	↓-0.6
2/20 05:30	138.1	↓-0.7
2/20 05:40	137.5	↓-0.6
2/20 05:50	136.8	↓-0.7
2/20 06:00	136.2	↓-0.6
2/20 06:10	135.5	↓-0.7
2/20 06:20	134.9	↓-0.6
2/20 06:30	134.4	↓-0.5
2/20 06:40	133.8	↓-0.6
2/20 06:50	133.3	↓-0.5
2/20 07:00	132.9	↓-0.4
2/20 07:10	132.6	↓-0.3
2/20 07:20	132.3	↓-0.3
2/20 07:30	132.2	↓-0.1
2/20 07:40	132.1	↓-0.1	干潮
2/20 07:50	132.1	0
2/20 08:00	132.2	↑0.1
2/20 08:10	132.4	↑0.2
2/20 08:20	132.7	↑0.3
2/20 08:30	133.1	↑0.4
2/20 08:40	133.5	↑0.4
2/20 08:50	134.0	↑0.5
2/20 09:00	134.6	↑0.6
2/20 09:10	135.2	↑0.6
2/20 09:20	135.9	↑0.7
2/20 09:30	136.6	↑0.7
2/20 09:40	137.3	↑0.7
2/20 09:50	138.0	↑0.7
2/20 10:00	138.7	↑0.7
2/20 10:10	139.4	↑0.7
2/20 10:20	140.0	↑0.6
2/20 10:30	140.7	↑0.7
2/20 10:40	141.2	↑0.5
2/20 10:50	141.7	↑0.5
2/20 11:00	142.2	↑0.5
2/20 11:10	142.6	↑0.4
2/20 11:20	142.9	↑0.3
2/20 11:30	143.1	↑0.2
2/20 11:40	143.3	↑0.2
2/20 11:50	143.3	0	満潮
2/20 12:00	143.3	0
2/20 12:10	143.2	↓-0.1
2/20 12:20	142.9	↓-0.3
2/20 12:30	142.6	↓-0.3
2/20 12:40	142.1	↓-0.5
2/20 12:50	141.6	↓-0.5
2/20 13:00	140.9	↓-0.7
2/20 13:10	140.2	↓-0.7
2/20 13:20	139.3	↓-0.9
2/20 13:30	138.3	↓-1.0
2/20 13:40	137.2	↓-1.1
2/20 13:50	135.9	↓-1.3
2/20 14:00	134.6	↓-1.3
2/20 14:10	133.1	↓-1.5
2/20 14:20	131.5	↓-1.6
2/20 14:30	129.8	↓-1.7
2/20 14:40	127.9	↓-1.9
2/20 14:50	125.9	↓-2.0
2/20 15:00	123.8	↓-2.1
2/20 15:10	121.6	↓-2.2
2/20 15:20	119.2	↓-2.4
2/20 15:30	116.8	↓-2.4
2/20 15:40	114.2	↓-2.6
2/20 15:50	111.5	↓-2.7
2/20 16:00	108.7	↓-2.8
2/20 16:10	105.9	↓-2.8
2/20 16:20	102.9	↓-3.0
2/20 16:30	99.8	↓-3.1
2/20 16:40	96.7	↓-3.1
2/20 16:50	93.6	↓-3.1
2/20 17:00	90.3	↓-3.3
2/20 17:10	87.1	↓-3.2
2/20 17:20	83.8	↓-3.3
2/20 17:30	80.5	↓-3.3
2/20 17:40	77.3	↓-3.2
2/20 17:50	74.1	↓-3.2
2/20 18:00	70.9	↓-3.2
2/20 18:10	67.8	↓-3.1
2/20 18:20	64.8	↓-3.0
2/20 18:30	61.9	↓-2.9
2/20 18:40	59.1	↓-2.8
2/20 18:50	56.5	↓-2.6
2/20 19:00	54.0	↓-2.5
2/20 19:10	51.8	↓-2.2
2/20 19:20	49.7	↓-2.1
2/20 19:30	47.9	↓-1.8
2/20 19:40	46.4	↓-1.5
2/20 19:50	45.1	↓-1.3
2/20 20:00	44.0	↓-1.1
2/20 20:10	43.3	↓-0.7
2/20 20:20	42.8	↓-0.5
2/20 20:30	42.6	↓-0.2	干潮
2/20 20:40	42.7	↑0.1
2/20 20:50	43.1	↑0.4
2/20 21:00	43.7	↑0.6
2/20 21:10	44.7	↑1.0
2/20 21:20	45.9	↑1.2
2/20 21:30	47.4	↑1.5
2/20 21:40	49.1	↑1.7
2/20 21:50	51.1	↑2.0
2/20 22:00	53.3	↑2.2
2/20 22:10	55.7	↑2.4
2/20 22:20	58.3	↑2.6
2/20 22:30	61.0	↑2.7
2/20 22:40	64.0	↑3.0
2/20 22:50	67.0	↑3.0
2/20 23:00	70.2	↑3.2
2/20 23:10	73.6	↑3.4
2/20 23:20	77.0	↑3.4
2/20 23:30	80.5	↑3.5
2/20 23:40	84.0	↑3.5
2/20 23:50	87.7	↑3.7	最大潮位差