18 (木)	02:58	08:13	13:22	20:31
	104cm	69cm	104cm	4cm
中潮 出 05:45 入 17:49 出 14:27 入 03:53

那珂湊（茨城）2038年03月18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
3/18 00:00	72.8	↑3.2
3/18 00:10	75.9	↑3.1
3/18 00:20	78.9	↑3.0
3/18 00:30	81.8	↑2.9
3/18 00:40	84.6	↑2.8
3/18 00:50	87.2	↑2.6
3/18 01:00	89.6	↑2.4
3/18 01:10	91.9	↑2.3
3/18 01:20	93.9	↑2.0
3/18 01:30	95.8	↑1.9
3/18 01:40	97.5	↑1.7
3/18 01:50	99.0	↑1.5
3/18 02:00	100.3	↑1.3
3/18 02:10	101.3	↑1.0
3/18 02:20	102.2	↑0.9
3/18 02:30	102.8	↑0.6
3/18 02:40	103.3	↑0.5
3/18 02:50	103.5	↑0.2	満潮
3/18 03:00	103.6	↑0.1
3/18 03:10	103.4	↓-0.2
3/18 03:20	103.1	↓-0.3
3/18 03:30	102.6	↓-0.5
3/18 03:40	101.9	↓-0.7
3/18 03:50	101.0	↓-0.9
3/18 04:00	100.0	↓-1.0
3/18 04:10	98.9	↓-1.1
3/18 04:20	97.6	↓-1.3
3/18 04:30	96.3	↓-1.3
3/18 04:40	94.8	↓-1.5
3/18 04:50	93.3	↓-1.5
3/18 05:00	91.7	↓-1.6
3/18 05:10	90.0	↓-1.7
3/18 05:20	88.3	↓-1.7
3/18 05:30	86.6	↓-1.7
3/18 05:40	84.9	↓-1.7
3/18 05:50	83.2	↓-1.7
3/18 06:00	81.6	↓-1.6
3/18 06:10	80.0	↓-1.6
3/18 06:20	78.4	↓-1.6
3/18 06:30	77.0	↓-1.4
3/18 06:40	75.6	↓-1.4
3/18 06:50	74.3	↓-1.3
3/18 07:00	73.1	↓-1.2
3/18 07:10	72.1	↓-1.0
3/18 07:20	71.2	↓-0.9
3/18 07:30	70.4	↓-0.8
3/18 07:40	69.8	↓-0.6
3/18 07:50	69.4	↓-0.4
3/18 08:00	69.1	↓-0.3
3/18 08:10	69.0	↓-0.1	干潮
3/18 08:20	69.1	↑0.1
3/18 08:30	69.3	↑0.2
3/18 08:40	69.7	↑0.4
3/18 08:50	70.2	↑0.5
3/18 09:00	70.9	↑0.7
3/18 09:10	71.8	↑0.9
3/18 09:20	72.8	↑1.0
3/18 09:30	73.9	↑1.1
3/18 09:40	75.1	↑1.2
3/18 09:50	76.5	↑1.4
3/18 10:00	78.0	↑1.5
3/18 10:10	79.5	↑1.5
3/18 10:20	81.1	↑1.6
3/18 10:30	82.8	↑1.7
3/18 10:40	84.5	↑1.7
3/18 10:50	86.3	↑1.8
3/18 11:00	88.0	↑1.7
3/18 11:10	89.7	↑1.7
3/18 11:20	91.4	↑1.7
3/18 11:30	93.1	↑1.7
3/18 11:40	94.7	↑1.6
3/18 11:50	96.2	↑1.5
3/18 12:00	97.6	↑1.4
3/18 12:10	98.9	↑1.3
3/18 12:20	100.0	↑1.1
3/18 12:30	101.1	↑1.1
3/18 12:40	101.9	↑0.8
3/18 12:50	102.6	↑0.7
3/18 13:00	103.1	↑0.5
3/18 13:10	103.5	↑0.4
3/18 13:20	103.6	↑0.1	満潮
3/18 13:30	103.5	↓-0.1
3/18 13:40	103.2	↓-0.3
3/18 13:50	102.7	↓-0.5
3/18 14:00	101.9	↓-0.8
3/18 14:10	101.0	↓-0.9
3/18 14:20	99.8	↓-1.2
3/18 14:30	98.4	↓-1.4
3/18 14:40	96.7	↓-1.7
3/18 14:50	94.9	↓-1.8
3/18 15:00	92.8	↓-2.1
3/18 15:10	90.5	↓-2.3
3/18 15:20	88.0	↓-2.5
3/18 15:30	85.4	↓-2.6
3/18 15:40	82.5	↓-2.9
3/18 15:50	79.5	↓-3.0
3/18 16:00	76.4	↓-3.1
3/18 16:10	73.1	↓-3.3
3/18 16:20	69.7	↓-3.4
3/18 16:30	66.2	↓-3.5
3/18 16:40	62.6	↓-3.6
3/18 16:50	59.0	↓-3.6
3/18 17:00	55.3	↓-3.7
3/18 17:10	51.6	↓-3.7
3/18 17:20	47.9	↓-3.7
3/18 17:30	44.2	↓-3.7
3/18 17:40	40.5	↓-3.7
3/18 17:50	37.0	↓-3.5
3/18 18:00	33.5	↓-3.5
3/18 18:10	30.1	↓-3.4
3/18 18:20	26.8	↓-3.3
3/18 18:30	23.7	↓-3.1
3/18 18:40	20.8	↓-2.9
3/18 18:50	18.0	↓-2.8
3/18 19:00	15.5	↓-2.5
3/18 19:10	13.1	↓-2.4
3/18 19:20	11.0	↓-2.1
3/18 19:30	9.2	↓-1.8
3/18 19:40	7.6	↓-1.6
3/18 19:50	6.3	↓-1.3
3/18 20:00	5.3	↓-1.0
3/18 20:10	4.5	↓-0.8
3/18 20:20	4.1	↓-0.4
3/18 20:30	4.0	↓-0.1	干潮
3/18 20:40	4.1	↑0.1
3/18 20:50	4.6	↑0.5
3/18 21:00	5.3	↑0.7
3/18 21:10	6.4	↑1.1
3/18 21:20	7.7	↑1.3
3/18 21:30	9.4	↑1.7
3/18 21:40	11.2	↑1.8
3/18 21:50	13.4	↑2.2
3/18 22:00	15.8	↑2.4
3/18 22:10	18.4	↑2.6
3/18 22:20	21.2	↑2.8
3/18 22:30	24.3	↑3.1
3/18 22:40	27.5	↑3.2
3/18 22:50	30.9	↑3.4
3/18 23:00	34.4	↑3.5
3/18 23:10	38.0	↑3.6
3/18 23:20	41.8	↑3.8
3/18 23:30	45.6	↑3.8
3/18 23:40	49.4	↑3.8
3/18 23:50	53.3	↑3.9	最大潮位差