20 (月)	10:37	03:40	22:44	17:19
	115cm	44cm	93cm	69cm
長潮 出 06:45 入 16:27 出 - 入 12:24

大洗（茨城）2038年12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
12/20 00:00	73.5	↓-2.0
12/20 00:10	71.6	↓-1.9
12/20 00:20	69.6	↓-2.0
12/20 00:30	67.6	↓-2.0
12/20 00:40	65.6	↓-2.0
12/20 00:50	63.6	↓-2.0
12/20 01:00	61.7	↓-1.9
12/20 01:10	59.8	↓-1.9
12/20 01:20	58.0	↓-1.8
12/20 01:30	56.2	↓-1.8
12/20 01:40	54.5	↓-1.7
12/20 01:50	52.9	↓-1.6
12/20 02:00	51.4	↓-1.5
12/20 02:10	49.9	↓-1.5
12/20 02:20	48.6	↓-1.3
12/20 02:30	47.4	↓-1.2
12/20 02:40	46.3	↓-1.1
12/20 02:50	45.4	↓-0.9
12/20 03:00	44.6	↓-0.8
12/20 03:10	44.0	↓-0.6
12/20 03:20	43.6	↓-0.4
12/20 03:30	43.3	↓-0.3	干潮
12/20 03:40	43.2	↓-0.1	干潮
12/20 03:50	43.3	↑0.1
12/20 04:00	43.7	↑0.4
12/20 04:10	44.2	↑0.5
12/20 04:20	44.9	↑0.7
12/20 04:30	45.8	↑0.9
12/20 04:40	46.9	↑1.1
12/20 04:50	48.2	↑1.3
12/20 05:00	49.7	↑1.5
12/20 05:10	51.4	↑1.7
12/20 05:20	53.3	↑1.9
12/20 05:30	55.3	↑2.0
12/20 05:40	57.4	↑2.1
12/20 05:50	59.7	↑2.3
12/20 06:00	62.1	↑2.4
12/20 06:10	64.5	↑2.4
12/20 06:20	67.1	↑2.6
12/20 06:30	69.8	↑2.7
12/20 06:40	72.4	↑2.6
12/20 06:50	75.2	↑2.8	最大潮位差
12/20 07:00	77.9	↑2.7
12/20 07:10	80.6	↑2.7
12/20 07:20	83.3	↑2.7
12/20 07:30	86.0	↑2.7
12/20 07:40	88.7	↑2.7
12/20 07:50	91.2	↑2.5
12/20 08:00	93.7	↑2.5
12/20 08:10	96.1	↑2.4
12/20 08:20	98.4	↑2.3
12/20 08:30	100.6	↑2.2
12/20 08:40	102.7	↑2.1
12/20 08:50	104.6	↑1.9
12/20 09:00	106.4	↑1.8
12/20 09:10	108.0	↑1.6
12/20 09:20	109.4	↑1.4
12/20 09:30	110.7	↑1.3
12/20 09:40	111.8	↑1.1
12/20 09:50	112.8	↑1.0
12/20 10:00	113.5	↑0.7
12/20 10:10	114.1	↑0.6
12/20 10:20	114.4	↑0.3
12/20 10:30	114.6	↑0.2	満潮
12/20 10:40	114.6	0
12/20 10:50	114.5	↓-0.1
12/20 11:00	114.1	↓-0.4
12/20 11:10	113.7	↓-0.4
12/20 11:20	113.0	↓-0.7
12/20 11:30	112.3	↓-0.7
12/20 11:40	111.3	↓-1.0
12/20 11:50	110.3	↓-1.0
12/20 12:00	109.2	↓-1.1
12/20 12:10	107.9	↓-1.3
12/20 12:20	106.6	↓-1.3
12/20 12:30	105.2	↓-1.4
12/20 12:40	103.7	↓-1.5
12/20 12:50	102.1	↓-1.6
12/20 13:00	100.5	↓-1.6
12/20 13:10	98.9	↓-1.6
12/20 13:20	97.2	↓-1.7
12/20 13:30	95.5	↓-1.7
12/20 13:40	93.7	↓-1.8
12/20 13:50	92.0	↓-1.7
12/20 14:00	90.2	↓-1.8
12/20 14:10	88.5	↓-1.7
12/20 14:20	86.8	↓-1.7
12/20 14:30	85.1	↓-1.7
12/20 14:40	83.4	↓-1.7
12/20 14:50	81.8	↓-1.6
12/20 15:00	80.3	↓-1.5
12/20 15:10	78.8	↓-1.5
12/20 15:20	77.3	↓-1.5
12/20 15:30	76.0	↓-1.3
12/20 15:40	74.7	↓-1.3
12/20 15:50	73.6	↓-1.1
12/20 16:00	72.5	↓-1.1
12/20 16:10	71.6	↓-0.9
12/20 16:20	70.8	↓-0.8
12/20 16:30	70.1	↓-0.7
12/20 16:40	69.6	↓-0.5
12/20 16:50	69.2	↓-0.4
12/20 17:00	68.9	↓-0.3
12/20 17:10	68.7	↓-0.2	干潮
12/20 17:20	68.7	0
12/20 17:30	68.8	↑0.1
12/20 17:40	69.0	↑0.2
12/20 17:50	69.3	↑0.3
12/20 18:00	69.7	↑0.4
12/20 18:10	70.3	↑0.6
12/20 18:20	70.9	↑0.6
12/20 18:30	71.6	↑0.7
12/20 18:40	72.4	↑0.8
12/20 18:50	73.3	↑0.9
12/20 19:00	74.2	↑0.9
12/20 19:10	75.2	↑1.0
12/20 19:20	76.2	↑1.0
12/20 19:30	77.2	↑1.0
12/20 19:40	78.3	↑1.1
12/20 19:50	79.4	↑1.1
12/20 20:00	80.5	↑1.1
12/20 20:10	81.6	↑1.1
12/20 20:20	82.7	↑1.1
12/20 20:30	83.8	↑1.1
12/20 20:40	84.9	↑1.1
12/20 20:50	85.9	↑1.0
12/20 21:00	86.8	↑0.9
12/20 21:10	87.8	↑1.0
12/20 21:20	88.6	↑0.8
12/20 21:30	89.4	↑0.8
12/20 21:40	90.1	↑0.7
12/20 21:50	90.7	↑0.6
12/20 22:00	91.2	↑0.5
12/20 22:10	91.6	↑0.4
12/20 22:20	92.0	↑0.4
12/20 22:30	92.2	↑0.2
12/20 22:40	92.3	↑0.1	満潮
12/20 22:50	92.2	↓-0.1
12/20 23:00	92.1	↓-0.1
12/20 23:10	91.9	↓-0.2
12/20 23:20	91.5	↓-0.4
12/20 23:30	91.0	↓-0.5
12/20 23:40	90.4	↓-0.6
12/20 23:50	89.7	↓-0.7