20 (木)	02:12	08:17	14:03	20:13
	113cm	60cm	106cm	46cm
若潮 出 05:01 入 18:16 出 02:25 入 14:06

上総勝浦（千葉）2028年04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
4/20 00:00	96.6	↑2.3
4/20 00:10	98.8	↑2.2
4/20 00:20	100.8	↑2.0
4/20 00:30	102.7	↑1.9
4/20 00:40	104.5	↑1.8
4/20 00:50	106.2	↑1.7
4/20 01:00	107.6	↑1.4
4/20 01:10	108.9	↑1.3
4/20 01:20	110.1	↑1.2
4/20 01:30	111.0	↑0.9
4/20 01:40	111.7	↑0.7
4/20 01:50	112.2	↑0.5
4/20 02:00	112.6	↑0.4
4/20 02:10	112.7	↑0.1	満潮
4/20 02:20	112.6	↓-0.1
4/20 02:30	112.3	↓-0.3
4/20 02:40	111.9	↓-0.4
4/20 02:50	111.2	↓-0.7
4/20 03:00	110.3	↓-0.9
4/20 03:10	109.2	↓-1.1
4/20 03:20	108.0	↓-1.2
4/20 03:30	106.6	↓-1.4
4/20 03:40	105.1	↓-1.5
4/20 03:50	103.4	↓-1.7
4/20 04:00	101.6	↓-1.8
4/20 04:10	99.7	↓-1.9
4/20 04:20	97.6	↓-2.1
4/20 04:30	95.5	↓-2.1
4/20 04:40	93.4	↓-2.1
4/20 04:50	91.2	↓-2.2
4/20 05:00	88.9	↓-2.3
4/20 05:10	86.7	↓-2.2
4/20 05:20	84.4	↓-2.3
4/20 05:30	82.2	↓-2.2
4/20 05:40	80.0	↓-2.2
4/20 05:50	77.8	↓-2.2
4/20 06:00	75.7	↓-2.1
4/20 06:10	73.7	↓-2.0
4/20 06:20	71.8	↓-1.9
4/20 06:30	70.0	↓-1.8
4/20 06:40	68.3	↓-1.7
4/20 06:50	66.7	↓-1.6
4/20 07:00	65.3	↓-1.4
4/20 07:10	64.0	↓-1.3
4/20 07:20	62.9	↓-1.1
4/20 07:30	61.9	↓-1.0
4/20 07:40	61.2	↓-0.7
4/20 07:50	60.6	↓-0.6
4/20 08:00	60.2	↓-0.4
4/20 08:10	60.0	↓-0.2	干潮
4/20 08:20	59.9	↓-0.1
4/20 08:30	60.1	↑0.2
4/20 08:40	60.4	↑0.3
4/20 08:50	61.0	↑0.6
4/20 09:00	61.7	↑0.7
4/20 09:10	62.6	↑0.9
4/20 09:20	63.6	↑1.0
4/20 09:30	64.8	↑1.2
4/20 09:40	66.2	↑1.4
4/20 09:50	67.7	↑1.5
4/20 10:00	69.3	↑1.6
4/20 10:10	71.0	↑1.7
4/20 10:20	72.9	↑1.9
4/20 10:30	74.8	↑1.9
4/20 10:40	76.8	↑2.0
4/20 10:50	78.8	↑2.0
4/20 11:00	80.8	↑2.0
4/20 11:10	82.9	↑2.1
4/20 11:20	85.0	↑2.1
4/20 11:30	87.0	↑2.0
4/20 11:40	89.1	↑2.1
4/20 11:50	91.0	↑1.9
4/20 12:00	93.0	↑2.0
4/20 12:10	94.8	↑1.8
4/20 12:20	96.5	↑1.7
4/20 12:30	98.2	↑1.7
4/20 12:40	99.7	↑1.5
4/20 12:50	101.0	↑1.3
4/20 13:00	102.3	↑1.3
4/20 13:10	103.3	↑1.0
4/20 13:20	104.2	↑0.9
4/20 13:30	104.9	↑0.7
4/20 13:40	105.5	↑0.6
4/20 13:50	105.8	↑0.3
4/20 14:00	105.9	↑0.1	満潮
4/20 14:10	105.9	0
4/20 14:20	105.6	↓-0.3
4/20 14:30	105.1	↓-0.5
4/20 14:40	104.5	↓-0.6
4/20 14:50	103.6	↓-0.9
4/20 15:00	102.5	↓-1.1
4/20 15:10	101.3	↓-1.2
4/20 15:20	99.8	↓-1.5
4/20 15:30	98.2	↓-1.6
4/20 15:40	96.4	↓-1.8
4/20 15:50	94.5	↓-1.9
4/20 16:00	92.5	↓-2.0
4/20 16:10	90.3	↓-2.2
4/20 16:20	88.0	↓-2.3
4/20 16:30	85.6	↓-2.4
4/20 16:40	83.2	↓-2.4
4/20 16:50	80.7	↓-2.5
4/20 17:00	78.2	↓-2.5
4/20 17:10	75.6	↓-2.6
4/20 17:20	73.1	↓-2.5
4/20 17:30	70.6	↓-2.5
4/20 17:40	68.1	↓-2.5
4/20 17:50	65.7	↓-2.4
4/20 18:00	63.3	↓-2.4
4/20 18:10	61.0	↓-2.3
4/20 18:20	58.9	↓-2.1
4/20 18:30	56.9	↓-2.0
4/20 18:40	55.0	↓-1.9
4/20 18:50	53.2	↓-1.8
4/20 19:00	51.6	↓-1.6
4/20 19:10	50.2	↓-1.4
4/20 19:20	49.0	↓-1.2
4/20 19:30	48.0	↓-1.0
4/20 19:40	47.1	↓-0.9
4/20 19:50	46.5	↓-0.6
4/20 20:00	46.1	↓-0.4
4/20 20:10	46.0	↓-0.1	干潮
4/20 20:20	46.0	0
4/20 20:30	46.3	↑0.3
4/20 20:40	46.8	↑0.5
4/20 20:50	47.6	↑0.8
4/20 21:00	48.5	↑0.9
4/20 21:10	49.7	↑1.2
4/20 21:20	51.1	↑1.4
4/20 21:30	52.7	↑1.6
4/20 21:40	54.5	↑1.8
4/20 21:50	56.5	↑2.0
4/20 22:00	58.7	↑2.2
4/20 22:10	61.0	↑2.3
4/20 22:20	63.4	↑2.4
4/20 22:30	66.0	↑2.6
4/20 22:40	68.7	↑2.7
4/20 22:50	71.5	↑2.8
4/20 23:00	74.4	↑2.9
4/20 23:10	77.3	↑2.9
4/20 23:20	80.3	↑3.0	最大潮位差
4/20 23:30	83.2	↑2.9
4/20 23:40	86.2	↑3.0	最大潮位差
4/20 23:50	89.1	↑2.9