20 (木)	10:54	03:41	22:58	17:33
	114cm	47cm	93cm	64cm
長潮 出 06:45 入 16:27 出 - 入 12:27

那珂湊（茨城）2057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	75.6	↓-1.9
12/20 00:10	73.7	↓-1.9
12/20 00:20	71.7	↓-2.0
12/20 00:30	69.8	↓-1.9
12/20 00:40	67.8	↓-2.0
12/20 00:50	65.9	↓-1.9
12/20 01:00	64.0	↓-1.9
12/20 01:10	62.1	↓-1.9
12/20 01:20	60.3	↓-1.8
12/20 01:30	58.6	↓-1.7
12/20 01:40	56.9	↓-1.7
12/20 01:50	55.3	↓-1.6
12/20 02:00	53.8	↓-1.5
12/20 02:10	52.5	↓-1.3
12/20 02:20	51.2	↓-1.3
12/20 02:30	50.1	↓-1.1
12/20 02:40	49.1	↓-1.0
12/20 02:50	48.3	↓-0.8
12/20 03:00	47.6	↓-0.7
12/20 03:10	47.0	↓-0.6
12/20 03:20	46.6	↓-0.4
12/20 03:30	46.4	↓-0.2
12/20 03:40	46.3	↓-0.1	干潮
12/20 03:50	46.4	↑0.1
12/20 04:00	46.6	↑0.2
12/20 04:10	47.0	↑0.4
12/20 04:20	47.6	↑0.6
12/20 04:30	48.3	↑0.7
12/20 04:40	49.1	↑0.8
12/20 04:50	50.1	↑1.0
12/20 05:00	51.3	↑1.2
12/20 05:10	52.6	↑1.3
12/20 05:20	54.0	↑1.4
12/20 05:30	55.6	↑1.6
12/20 05:40	57.3	↑1.7
12/20 05:50	59.1	↑1.8
12/20 06:00	61.0	↑1.9
12/20 06:10	63.0	↑2.0
12/20 06:20	65.1	↑2.1
12/20 06:30	67.3	↑2.2
12/20 06:40	69.6	↑2.3
12/20 06:50	71.9	↑2.3
12/20 07:00	74.3	↑2.4
12/20 07:10	76.8	↑2.5	最大潮位差
12/20 07:20	79.2	↑2.4
12/20 07:30	81.7	↑2.5	最大潮位差
12/20 07:40	84.2	↑2.5	最大潮位差
12/20 07:50	86.6	↑2.4
12/20 08:00	89.0	↑2.4
12/20 08:10	91.4	↑2.4
12/20 08:20	93.8	↑2.4
12/20 08:30	96.0	↑2.2
12/20 08:40	98.2	↑2.2
12/20 08:50	100.3	↑2.1
12/20 09:00	102.3	↑2.0
12/20 09:10	104.1	↑1.8
12/20 09:20	105.9	↑1.8
12/20 09:30	107.4	↑1.5
12/20 09:40	108.8	↑1.4
12/20 09:50	110.1	↑1.3
12/20 10:00	111.2	↑1.1
12/20 10:10	112.1	↑0.9
12/20 10:20	112.8	↑0.7
12/20 10:30	113.3	↑0.5
12/20 10:40	113.7	↑0.4
12/20 10:50	113.8	↑0.1	満潮
12/20 11:00	113.8	0
12/20 11:10	113.6	↓-0.2
12/20 11:20	113.2	↓-0.4
12/20 11:30	112.6	↓-0.6
12/20 11:40	111.9	↓-0.7
12/20 11:50	111.0	↓-0.9
12/20 12:00	109.9	↓-1.1
12/20 12:10	108.7	↓-1.2
12/20 12:20	107.3	↓-1.4
12/20 12:30	105.9	↓-1.4
12/20 12:40	104.3	↓-1.6
12/20 12:50	102.6	↓-1.7
12/20 13:00	100.9	↓-1.7
12/20 13:10	99.1	↓-1.8
12/20 13:20	97.2	↓-1.9
12/20 13:30	95.3	↓-1.9
12/20 13:40	93.3	↓-2.0
12/20 13:50	91.4	↓-1.9
12/20 14:00	89.4	↓-2.0
12/20 14:10	87.4	↓-2.0
12/20 14:20	85.5	↓-1.9
12/20 14:30	83.6	↓-1.9
12/20 14:40	81.7	↓-1.9
12/20 14:50	79.9	↓-1.8
12/20 15:00	78.1	↓-1.8
12/20 15:10	76.5	↓-1.6
12/20 15:20	74.9	↓-1.6
12/20 15:30	73.3	↓-1.6
12/20 15:40	71.9	↓-1.4
12/20 15:50	70.6	↓-1.3
12/20 16:00	69.4	↓-1.2
12/20 16:10	68.3	↓-1.1
12/20 16:20	67.3	↓-1.0
12/20 16:30	66.5	↓-0.8
12/20 16:40	65.7	↓-0.8
12/20 16:50	65.1	↓-0.6
12/20 17:00	64.6	↓-0.5
12/20 17:10	64.3	↓-0.3
12/20 17:20	64.1	↓-0.2
12/20 17:30	64.0	↓-0.1	干潮
12/20 17:40	64.0	0
12/20 17:50	64.2	↑0.2
12/20 18:00	64.5	↑0.3
12/20 18:10	64.9	↑0.4
12/20 18:20	65.4	↑0.5
12/20 18:30	66.0	↑0.6
12/20 18:40	66.8	↑0.8
12/20 18:50	67.7	↑0.9
12/20 19:00	68.6	↑0.9
12/20 19:10	69.6	↑1.0
12/20 19:20	70.8	↑1.2
12/20 19:30	71.9	↑1.1
12/20 19:40	73.2	↑1.3
12/20 19:50	74.5	↑1.3
12/20 20:00	75.8	↑1.3
12/20 20:10	77.1	↑1.3
12/20 20:20	78.5	↑1.4
12/20 20:30	79.9	↑1.4
12/20 20:40	81.2	↑1.3
12/20 20:50	82.5	↑1.3
12/20 21:00	83.8	↑1.3
12/20 21:10	85.1	↑1.3
12/20 21:20	86.2	↑1.1
12/20 21:30	87.3	↑1.1
12/20 21:40	88.3	↑1.0
12/20 21:50	89.3	↑1.0
12/20 22:00	90.1	↑0.8
12/20 22:10	90.8	↑0.7
12/20 22:20	91.3	↑0.5
12/20 22:30	91.8	↑0.5
12/20 22:40	92.1	↑0.3
12/20 22:50	92.3	↑0.2	満潮
12/20 23:00	92.3	0
12/20 23:10	92.2	↓-0.1
12/20 23:20	91.9	↓-0.3
12/20 23:30	91.5	↓-0.4
12/20 23:40	91.0	↓-0.5
12/20 23:50	90.4	↓-0.6