20 (月)	02:43	08:49	14:33	20:44
	108cm	44cm	97cm	29cm
中潮 出 04:59 入 18:17 出 03:53 入 15:36

那珂湊（茨城）2020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	78.8	↑3.1
4/20 00:10	81.8	↑3.0
4/20 00:20	84.7	↑2.9
4/20 00:30	87.5	↑2.8
4/20 00:40	90.1	↑2.6
4/20 00:50	92.7	↑2.6
4/20 01:00	95.0	↑2.3
4/20 01:10	97.2	↑2.2
4/20 01:20	99.2	↑2.0
4/20 01:30	100.9	↑1.7
4/20 01:40	102.5	↑1.6
4/20 01:50	103.8	↑1.3
4/20 02:00	105.0	↑1.2
4/20 02:10	105.9	↑0.9
4/20 02:20	106.5	↑0.6
4/20 02:30	106.9	↑0.4
4/20 02:40	107.1	↑0.2	満潮
4/20 02:50	107.0	↓-0.1
4/20 03:00	106.7	↓-0.3
4/20 03:10	106.1	↓-0.6
4/20 03:20	105.4	↓-0.7
4/20 03:30	104.4	↓-1.0
4/20 03:40	103.1	↓-1.3
4/20 03:50	101.7	↓-1.4
4/20 04:00	100.1	↓-1.6
4/20 04:10	98.3	↓-1.8
4/20 04:20	96.3	↓-2.0
4/20 04:30	94.2	↓-2.1
4/20 04:40	92.0	↓-2.2
4/20 04:50	89.6	↓-2.4
4/20 05:00	87.1	↓-2.5
4/20 05:10	84.5	↓-2.6
4/20 05:20	81.9	↓-2.6
4/20 05:30	79.2	↓-2.7
4/20 05:40	76.5	↓-2.7
4/20 05:50	73.8	↓-2.7
4/20 06:00	71.1	↓-2.7
4/20 06:10	68.4	↓-2.7
4/20 06:20	65.8	↓-2.6
4/20 06:30	63.2	↓-2.6
4/20 06:40	60.7	↓-2.5
4/20 06:50	58.4	↓-2.3
4/20 07:00	56.2	↓-2.2
4/20 07:10	54.1	↓-2.1
4/20 07:20	52.1	↓-2.0
4/20 07:30	50.4	↓-1.7
4/20 07:40	48.8	↓-1.6
4/20 07:50	47.4	↓-1.4
4/20 08:00	46.2	↓-1.2
4/20 08:10	45.3	↓-0.9
4/20 08:20	44.5	↓-0.8
4/20 08:30	44.0	↓-0.5
4/20 08:40	43.7	↓-0.3	干潮
4/20 08:50	43.6	↓-0.1
4/20 09:00	43.8	↑0.2
4/20 09:10	44.2	↑0.4
4/20 09:20	44.8	↑0.6
4/20 09:30	45.6	↑0.8
4/20 09:40	46.6	↑1.0
4/20 09:50	47.8	↑1.2
4/20 10:00	49.2	↑1.4
4/20 10:10	50.8	↑1.6
4/20 10:20	52.6	↑1.8
4/20 10:30	54.5	↑1.9
4/20 10:40	56.5	↑2.0
4/20 10:50	58.6	↑2.1
4/20 11:00	60.8	↑2.2
4/20 11:10	63.1	↑2.3
4/20 11:20	65.5	↑2.4
4/20 11:30	67.9	↑2.4
4/20 11:40	70.3	↑2.4
4/20 11:50	72.7	↑2.4
4/20 12:00	75.1	↑2.4
4/20 12:10	77.5	↑2.4
4/20 12:20	79.8	↑2.3
4/20 12:30	82.0	↑2.2
4/20 12:40	84.1	↑2.1
4/20 12:50	86.1	↑2.0
4/20 13:00	88.0	↑1.9
4/20 13:10	89.7	↑1.7
4/20 13:20	91.3	↑1.6
4/20 13:30	92.7	↑1.4
4/20 13:40	94.0	↑1.3
4/20 13:50	95.0	↑1.0
4/20 14:00	95.8	↑0.8
4/20 14:10	96.4	↑0.6
4/20 14:20	96.8	↑0.4
4/20 14:30	97.0	↑0.2	満潮
4/20 14:40	96.9	↓-0.1
4/20 14:50	96.6	↓-0.3
4/20 15:00	96.1	↓-0.5
4/20 15:10	95.4	↓-0.7
4/20 15:20	94.4	↓-1.0
4/20 15:30	93.2	↓-1.2
4/20 15:40	91.8	↓-1.4
4/20 15:50	90.2	↓-1.6
4/20 16:00	88.4	↓-1.8
4/20 16:10	86.5	↓-1.9
4/20 16:20	84.3	↓-2.2
4/20 16:30	82.0	↓-2.3
4/20 16:40	79.6	↓-2.4
4/20 16:50	77.0	↓-2.6
4/20 17:00	74.3	↓-2.7
4/20 17:10	71.5	↓-2.8
4/20 17:20	68.7	↓-2.8
4/20 17:30	65.8	↓-2.9
4/20 17:40	62.9	↓-2.9
4/20 17:50	60.0	↓-2.9
4/20 18:00	57.1	↓-2.9
4/20 18:10	54.2	↓-2.9
4/20 18:20	51.4	↓-2.8
4/20 18:30	48.6	↓-2.8
4/20 18:40	46.0	↓-2.6
4/20 18:50	43.5	↓-2.5
4/20 19:00	41.1	↓-2.4
4/20 19:10	38.9	↓-2.2
4/20 19:20	36.8	↓-2.1
4/20 19:30	34.9	↓-1.9
4/20 19:40	33.3	↓-1.6
4/20 19:50	31.8	↓-1.5
4/20 20:00	30.6	↓-1.2
4/20 20:10	29.7	↓-0.9
4/20 20:20	29.0	↓-0.7
4/20 20:30	28.5	↓-0.5
4/20 20:40	28.3	↓-0.2	干潮
4/20 20:50	28.4	↑0.1
4/20 21:00	28.7	↑0.3
4/20 21:10	29.3	↑0.6
4/20 21:20	30.1	↑0.8
4/20 21:30	31.2	↑1.1
4/20 21:40	32.6	↑1.4
4/20 21:50	34.2	↑1.6
4/20 22:00	36.0	↑1.8
4/20 22:10	38.1	↑2.1
4/20 22:20	40.3	↑2.2
4/20 22:30	42.8	↑2.5
4/20 22:40	45.4	↑2.6
4/20 22:50	48.1	↑2.7
4/20 23:00	51.1	↑3.0
4/20 23:10	54.1	↑3.0
4/20 23:20	57.2	↑3.1
4/20 23:30	60.4	↑3.2
4/20 23:40	63.7	↑3.3	最大潮位差
4/20 23:50	67.0	↑3.3	最大潮位差