20 (日)	05:44	06:30	11:08	20:24
	106cm	106cm	110cm	28cm
長潮 出 06:21 入 17:26 出 02:59 入 12:35

上総勝浦（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	76.3	↑2.0
2/20 00:10	78.2	↑1.9
2/20 00:20	80.1	↑1.9
2/20 00:30	81.9	↑1.8
2/20 00:40	83.7	↑1.8
2/20 00:50	85.5	↑1.8
2/20 01:00	87.2	↑1.7
2/20 01:10	88.8	↑1.6
2/20 01:20	90.3	↑1.5
2/20 01:30	91.8	↑1.5
2/20 01:40	93.2	↑1.4
2/20 01:50	94.5	↑1.3
2/20 02:00	95.7	↑1.2
2/20 02:10	96.8	↑1.1
2/20 02:20	97.9	↑1.1
2/20 02:30	98.8	↑0.9
2/20 02:40	99.7	↑0.9
2/20 02:50	100.5	↑0.8
2/20 03:00	101.2	↑0.7
2/20 03:10	101.8	↑0.6
2/20 03:20	102.4	↑0.6
2/20 03:30	102.9	↑0.5
2/20 03:40	103.4	↑0.5
2/20 03:50	103.7	↑0.3
2/20 04:00	104.0	↑0.3
2/20 04:10	104.3	↑0.3
2/20 04:20	104.5	↑0.2
2/20 04:30	104.7	↑0.2
2/20 04:40	104.9	↑0.2
2/20 04:50	105.0	↑0.1
2/20 05:00	105.1	↑0.1
2/20 05:10	105.1	0
2/20 05:20	105.1	0
2/20 05:30	105.2	↑0.1
2/20 05:40	105.2	0	満潮
2/20 05:50	105.2	0
2/20 06:00	105.2	0
2/20 06:10	105.2	0
2/20 06:20	105.2	0	干潮
2/20 06:30	105.2	0	干潮
2/20 06:40	105.2	0
2/20 06:50	105.2	0
2/20 07:00	105.2	0
2/20 07:10	105.2	0
2/20 07:20	105.3	↑0.1
2/20 07:30	105.4	↑0.1
2/20 07:40	105.5	↑0.1
2/20 07:50	105.6	↑0.1
2/20 08:00	105.8	↑0.2
2/20 08:10	105.9	↑0.1
2/20 08:20	106.1	↑0.2
2/20 08:30	106.4	↑0.3
2/20 08:40	106.6	↑0.2
2/20 08:50	106.8	↑0.2
2/20 09:00	107.1	↑0.3
2/20 09:10	107.4	↑0.3
2/20 09:20	107.6	↑0.2
2/20 09:30	107.9	↑0.3
2/20 09:40	108.2	↑0.3
2/20 09:50	108.4	↑0.2
2/20 10:00	108.7	↑0.3
2/20 10:10	108.9	↑0.2
2/20 10:20	109.1	↑0.2
2/20 10:30	109.3	↑0.2
2/20 10:40	109.4	↑0.1
2/20 10:50	109.5	↑0.1
2/20 11:00	109.6	↑0.1	満潮
2/20 11:10	109.6	0
2/20 11:20	109.5	↓-0.1
2/20 11:30	109.4	↓-0.1
2/20 11:40	109.3	↓-0.1
2/20 11:50	109.0	↓-0.3
2/20 12:00	108.7	↓-0.3
2/20 12:10	108.3	↓-0.4
2/20 12:20	107.9	↓-0.4
2/20 12:30	107.3	↓-0.6
2/20 12:40	106.7	↓-0.6
2/20 12:50	106.0	↓-0.7
2/20 13:00	105.1	↓-0.9
2/20 13:10	104.2	↓-0.9
2/20 13:20	103.2	↓-1.0
2/20 13:30	102.0	↓-1.2
2/20 13:40	100.8	↓-1.2
2/20 13:50	99.4	↓-1.4
2/20 14:00	98.0	↓-1.4
2/20 14:10	96.4	↓-1.6
2/20 14:20	94.7	↓-1.7
2/20 14:30	92.9	↓-1.8
2/20 14:40	91.1	↓-1.8
2/20 14:50	89.1	↓-2.0
2/20 15:00	87.0	↓-2.1
2/20 15:10	84.9	↓-2.1
2/20 15:20	82.7	↓-2.2
2/20 15:30	80.4	↓-2.3
2/20 15:40	78.1	↓-2.3
2/20 15:50	75.7	↓-2.4
2/20 16:00	73.2	↓-2.5
2/20 16:10	70.8	↓-2.4
2/20 16:20	68.3	↓-2.5
2/20 16:30	65.8	↓-2.5
2/20 16:40	63.3	↓-2.5
2/20 16:50	60.8	↓-2.5
2/20 17:00	58.3	↓-2.5
2/20 17:10	55.9	↓-2.4
2/20 17:20	53.4	↓-2.5
2/20 17:30	51.1	↓-2.3
2/20 17:40	48.8	↓-2.3
2/20 17:50	46.6	↓-2.2
2/20 18:00	44.4	↓-2.2
2/20 18:10	42.4	↓-2.0
2/20 18:20	40.4	↓-2.0
2/20 18:30	38.6	↓-1.8
2/20 18:40	36.8	↓-1.8
2/20 18:50	35.2	↓-1.6
2/20 19:00	33.7	↓-1.5
2/20 19:10	32.4	↓-1.3
2/20 19:20	31.3	↓-1.1
2/20 19:30	30.2	↓-1.1
2/20 19:40	29.4	↓-0.8
2/20 19:50	28.7	↓-0.7
2/20 20:00	28.2	↓-0.5
2/20 20:10	27.9	↓-0.3
2/20 20:20	27.7	↓-0.2	干潮
2/20 20:30	27.8	↑0.1
2/20 20:40	28.0	↑0.2
2/20 20:50	28.4	↑0.4
2/20 21:00	29.0	↑0.6
2/20 21:10	29.8	↑0.8
2/20 21:20	30.8	↑1.0
2/20 21:30	31.9	↑1.1
2/20 21:40	33.2	↑1.3
2/20 21:50	34.7	↑1.5
2/20 22:00	36.3	↑1.6
2/20 22:10	38.0	↑1.7
2/20 22:20	40.0	↑2.0
2/20 22:30	42.0	↑2.0
2/20 22:40	44.2	↑2.2
2/20 22:50	46.4	↑2.2
2/20 23:00	48.8	↑2.4
2/20 23:10	51.3	↑2.5
2/20 23:20	53.8	↑2.5
2/20 23:30	56.4	↑2.6
2/20 23:40	59.0	↑2.6
2/20 23:50	61.7	↑2.7	最大潮位差