20 (木)	01:51	07:46	13:24	19:35
	106cm	62cm	97cm	46cm
若潮 出 04:58 入 18:17 出 02:25 入 14:04

大洗（茨城）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	96.0	↑1.7
4/20 00:10	97.5	↑1.5
4/20 00:20	98.9	↑1.4
4/20 00:30	100.2	↑1.3
4/20 00:40	101.4	↑1.2
4/20 00:50	102.4	↑1.0
4/20 01:00	103.3	↑0.9
4/20 01:10	104.0	↑0.7
4/20 01:20	104.6	↑0.6
4/20 01:30	105.0	↑0.4
4/20 01:40	105.3	↑0.3
4/20 01:50	105.3	0	満潮
4/20 02:00	105.3	0
4/20 02:10	105.0	↓-0.3
4/20 02:20	104.6	↓-0.4
4/20 02:30	104.0	↓-0.6
4/20 02:40	103.3	↓-0.7
4/20 02:50	102.4	↓-0.9
4/20 03:00	101.3	↓-1.1
4/20 03:10	100.1	↓-1.2
4/20 03:20	98.7	↓-1.4
4/20 03:30	97.3	↓-1.4
4/20 03:40	95.7	↓-1.6
4/20 03:50	94.0	↓-1.7
4/20 04:00	92.3	↓-1.7
4/20 04:10	90.4	↓-1.9
4/20 04:20	88.5	↓-1.9
4/20 04:30	86.6	↓-1.9
4/20 04:40	84.6	↓-2.0
4/20 04:50	82.7	↓-1.9
4/20 05:00	80.7	↓-2.0
4/20 05:10	78.8	↓-1.9
4/20 05:20	76.9	↓-1.9
4/20 05:30	75.1	↓-1.8
4/20 05:40	73.4	↓-1.7
4/20 05:50	71.7	↓-1.7
4/20 06:00	70.2	↓-1.5
4/20 06:10	68.7	↓-1.5
4/20 06:20	67.4	↓-1.3
4/20 06:30	66.2	↓-1.2
4/20 06:40	65.2	↓-1.0
4/20 06:50	64.3	↓-0.9
4/20 07:00	63.5	↓-0.8
4/20 07:10	62.9	↓-0.6
4/20 07:20	62.4	↓-0.5
4/20 07:30	62.1	↓-0.3
4/20 07:40	62.0	↓-0.1	干潮
4/20 07:50	62.0	0
4/20 08:00	62.1	↑0.1
4/20 08:10	62.4	↑0.3
4/20 08:20	62.9	↑0.5
4/20 08:30	63.5	↑0.6
4/20 08:40	64.2	↑0.7
4/20 08:50	65.1	↑0.9
4/20 09:00	66.1	↑1.0
4/20 09:10	67.2	↑1.1
4/20 09:20	68.4	↑1.2
4/20 09:30	69.7	↑1.3
4/20 09:40	71.1	↑1.4
4/20 09:50	72.5	↑1.4
4/20 10:00	74.0	↑1.5
4/20 10:10	75.6	↑1.6
4/20 10:20	77.1	↑1.5
4/20 10:30	78.7	↑1.6
4/20 10:40	80.3	↑1.6
4/20 10:50	81.9	↑1.6
4/20 11:00	83.5	↑1.6
4/20 11:10	85.0	↑1.5
4/20 11:20	86.5	↑1.5
4/20 11:30	87.9	↑1.4
4/20 11:40	89.2	↑1.3
4/20 11:50	90.4	↑1.2
4/20 12:00	91.5	↑1.1
4/20 12:10	92.6	↑1.1
4/20 12:20	93.5	↑0.9
4/20 12:30	94.3	↑0.8
4/20 12:40	95.0	↑0.7
4/20 12:50	95.5	↑0.5
4/20 13:00	95.9	↑0.4
4/20 13:10	96.2	↑0.3
4/20 13:20	96.3	↑0.1	満潮
4/20 13:30	96.3	0
4/20 13:40	96.1	↓-0.2
4/20 13:50	95.8	↓-0.3
4/20 14:00	95.3	↓-0.5
4/20 14:10	94.6	↓-0.7
4/20 14:20	93.8	↓-0.8
4/20 14:30	92.9	↓-0.9
4/20 14:40	91.8	↓-1.1
4/20 14:50	90.6	↓-1.2
4/20 15:00	89.2	↓-1.4
4/20 15:10	87.7	↓-1.5
4/20 15:20	86.0	↓-1.7
4/20 15:30	84.3	↓-1.7
4/20 15:40	82.4	↓-1.9
4/20 15:50	80.5	↓-1.9
4/20 16:00	78.4	↓-2.1
4/20 16:10	76.3	↓-2.1
4/20 16:20	74.2	↓-2.1
4/20 16:30	72.0	↓-2.2
4/20 16:40	69.8	↓-2.2
4/20 16:50	67.6	↓-2.2
4/20 17:00	65.4	↓-2.2
4/20 17:10	63.3	↓-2.1
4/20 17:20	61.2	↓-2.1
4/20 17:30	59.2	↓-2.0
4/20 17:40	57.3	↓-1.9
4/20 17:50	55.4	↓-1.9
4/20 18:00	53.7	↓-1.7
4/20 18:10	52.2	↓-1.5
4/20 18:20	50.8	↓-1.4
4/20 18:30	49.5	↓-1.3
4/20 18:40	48.4	↓-1.1
4/20 18:50	47.5	↓-0.9
4/20 19:00	46.7	↓-0.8
4/20 19:10	46.2	↓-0.5
4/20 19:20	45.8	↓-0.4
4/20 19:30	45.6	↓-0.2	干潮
4/20 19:40	45.7	↑0.1
4/20 19:50	45.9	↑0.2
4/20 20:00	46.3	↑0.4
4/20 20:10	46.9	↑0.6
4/20 20:20	47.7	↑0.8
4/20 20:30	48.6	↑0.9
4/20 20:40	49.8	↑1.2
4/20 20:50	51.2	↑1.4
4/20 21:00	52.7	↑1.5
4/20 21:10	54.3	↑1.6
4/20 21:20	56.2	↑1.9
4/20 21:30	58.1	↑1.9
4/20 21:40	60.2	↑2.1
4/20 21:50	62.4	↑2.2
4/20 22:00	64.7	↑2.3
4/20 22:10	67.1	↑2.4
4/20 22:20	69.6	↑2.5
4/20 22:30	72.1	↑2.5
4/20 22:40	74.7	↑2.6	最大潮位差
4/20 22:50	77.3	↑2.6	最大潮位差
4/20 23:00	79.9	↑2.6	最大潮位差
4/20 23:10	82.5	↑2.6	最大潮位差
4/20 23:20	85.0	↑2.5
4/20 23:30	87.5	↑2.5
4/20 23:40	90.0	↑2.5
4/20 23:50	92.3	↑2.3