22 (水)	00:31	06:05	12:14	19:18
	99cm	65cm	118cm	33cm
中潮 出 06:46 入 16:28 出 01:59 入 13:29

那珂湊（茨城）2038年12月22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
12/22 00:00	97.8	↑0.6
12/22 00:10	98.2	↑0.4
12/22 00:20	98.5	↑0.3
12/22 00:30	98.5	0	満潮
12/22 00:40	98.5	0
12/22 00:50	98.2	↓-0.3
12/22 01:00	97.8	↓-0.4
12/22 01:10	97.3	↓-0.5
12/22 01:20	96.6	↓-0.7
12/22 01:30	95.8	↓-0.8
12/22 01:40	94.8	↓-1.0
12/22 01:50	93.8	↓-1.0
12/22 02:00	92.6	↓-1.2
12/22 02:10	91.3	↓-1.3
12/22 02:20	90.0	↓-1.3
12/22 02:30	88.6	↓-1.4
12/22 02:40	87.1	↓-1.5
12/22 02:50	85.6	↓-1.5
12/22 03:00	84.0	↓-1.6
12/22 03:10	82.5	↓-1.5
12/22 03:20	80.9	↓-1.6
12/22 03:30	79.3	↓-1.6
12/22 03:40	77.8	↓-1.5
12/22 03:50	76.2	↓-1.6
12/22 04:00	74.7	↓-1.5
12/22 04:10	73.3	↓-1.4
12/22 04:20	72.0	↓-1.3
12/22 04:30	70.7	↓-1.3
12/22 04:40	69.5	↓-1.2
12/22 04:50	68.4	↓-1.1
12/22 05:00	67.4	↓-1.0
12/22 05:10	66.6	↓-0.8
12/22 05:20	65.8	↓-0.8
12/22 05:30	65.2	↓-0.6
12/22 05:40	64.8	↓-0.4
12/22 05:50	64.5	↓-0.3
12/22 06:00	64.3	↓-0.2	干潮
12/22 06:10	64.3	0
12/22 06:20	64.5	↑0.2
12/22 06:30	64.8	↑0.3
12/22 06:40	65.3	↑0.5
12/22 06:50	66.0	↑0.7
12/22 07:00	66.8	↑0.8
12/22 07:10	67.8	↑1.0
12/22 07:20	69.0	↑1.2
12/22 07:30	70.3	↑1.3
12/22 07:40	71.7	↑1.4
12/22 07:50	73.3	↑1.6
12/22 08:00	75.0	↑1.7
12/22 08:10	76.8	↑1.8
12/22 08:20	78.8	↑2.0
12/22 08:30	80.8	↑2.0
12/22 08:40	82.9	↑2.1
12/22 08:50	85.1	↑2.2
12/22 09:00	87.3	↑2.2
12/22 09:10	89.5	↑2.2
12/22 09:20	91.8	↑2.3
12/22 09:30	94.1	↑2.3
12/22 09:40	96.3	↑2.2
12/22 09:50	98.6	↑2.3
12/22 10:00	100.7	↑2.1
12/22 10:10	102.8	↑2.1
12/22 10:20	104.9	↑2.1
12/22 10:30	106.8	↑1.9
12/22 10:40	108.6	↑1.8
12/22 10:50	110.2	↑1.6
12/22 11:00	111.8	↑1.6
12/22 11:10	113.1	↑1.3
12/22 11:20	114.3	↑1.2
12/22 11:30	115.3	↑1.0
12/22 11:40	116.1	↑0.8
12/22 11:50	116.7	↑0.6
12/22 12:00	117.1	↑0.4
12/22 12:10	117.3	↑0.2	満潮
12/22 12:20	117.2	↓-0.1
12/22 12:30	117.0	↓-0.2
12/22 12:40	116.5	↓-0.5
12/22 12:50	115.8	↓-0.7
12/22 13:00	114.9	↓-0.9
12/22 13:10	113.8	↓-1.1
12/22 13:20	112.4	↓-1.4
12/22 13:30	110.9	↓-1.5
12/22 13:40	109.1	↓-1.8
12/22 13:50	107.2	↓-1.9
12/22 14:00	105.1	↓-2.1
12/22 14:10	102.8	↓-2.3
12/22 14:20	100.4	↓-2.4
12/22 14:30	97.8	↓-2.6
12/22 14:40	95.2	↓-2.6
12/22 14:50	92.4	↓-2.8
12/22 15:00	89.5	↓-2.9
12/22 15:10	86.5	↓-3.0
12/22 15:20	83.4	↓-3.1
12/22 15:30	80.3	↓-3.1
12/22 15:40	77.2	↓-3.1
12/22 15:50	74.1	↓-3.1
12/22 16:00	70.9	↓-3.2	最大潮位差
12/22 16:10	67.8	↓-3.1
12/22 16:20	64.7	↓-3.1
12/22 16:30	61.7	↓-3.0
12/22 16:40	58.8	↓-2.9
12/22 16:50	55.9	↓-2.9
12/22 17:00	53.1	↓-2.8
12/22 17:10	50.5	↓-2.6
12/22 17:20	48.0	↓-2.5
12/22 17:30	45.6	↓-2.4
12/22 17:40	43.4	↓-2.2
12/22 17:50	41.4	↓-2.0
12/22 18:00	39.6	↓-1.8
12/22 18:10	37.9	↓-1.7
12/22 18:20	36.5	↓-1.4
12/22 18:30	35.3	↓-1.2
12/22 18:40	34.3	↓-1.0
12/22 18:50	33.6	↓-0.7
12/22 19:00	33.0	↓-0.6
12/22 19:10	32.8	↓-0.2	干潮
12/22 19:20	32.7	↓-0.1
12/22 19:30	32.9	↑0.2
12/22 19:40	33.3	↑0.4
12/22 19:50	34.0	↑0.7
12/22 20:00	34.9	↑0.9
12/22 20:10	36.0	↑1.1
12/22 20:20	37.3	↑1.3
12/22 20:30	38.9	↑1.6
12/22 20:40	40.6	↑1.7
12/22 20:50	42.6	↑2.0
12/22 21:00	44.7	↑2.1
12/22 21:10	46.9	↑2.2
12/22 21:20	49.3	↑2.4
12/22 21:30	51.8	↑2.5
12/22 21:40	54.5	↑2.7
12/22 21:50	57.2	↑2.7
12/22 22:00	60.0	↑2.8
12/22 22:10	62.9	↑2.9
12/22 22:20	65.7	↑2.8
12/22 22:30	68.6	↑2.9
12/22 22:40	71.5	↑2.9
12/22 22:50	74.4	↑2.9
12/22 23:00	77.3	↑2.9
12/22 23:10	80.0	↑2.7
12/22 23:20	82.7	↑2.7
12/22 23:30	85.4	↑2.7
12/22 23:40	87.9	↑2.5
12/22 23:50	90.2	↑2.3