20 (木)	03:42	10:00	16:35	22:22
	110cm	12cm	117cm	42cm
大潮 出 04:59 入 18:16 出 04:57 入 18:23 潮干狩り ◎ 08:09～11:51

那珂湊（茨城）2023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	56.4	↑3.1
4/20 00:10	59.6	↑3.2
4/20 00:20	62.9	↑3.3
4/20 00:30	66.3	↑3.4
4/20 00:40	69.6	↑3.3
4/20 00:50	73.0	↑3.4
4/20 01:00	76.4	↑3.4
4/20 01:10	79.8	↑3.4
4/20 01:20	83.0	↑3.2
4/20 01:30	86.2	↑3.2
4/20 01:40	89.3	↑3.1
4/20 01:50	92.2	↑2.9
4/20 02:00	95.0	↑2.8
4/20 02:10	97.6	↑2.6
4/20 02:20	100.0	↑2.4
4/20 02:30	102.2	↑2.2
4/20 02:40	104.1	↑1.9
4/20 02:50	105.8	↑1.7
4/20 03:00	107.2	↑1.4
4/20 03:10	108.3	↑1.1
4/20 03:20	109.1	↑0.8
4/20 03:30	109.6	↑0.5
4/20 03:40	109.8	↑0.2	満潮
4/20 03:50	109.7	↓-0.1
4/20 04:00	109.3	↓-0.4
4/20 04:10	108.5	↓-0.8
4/20 04:20	107.4	↓-1.1
4/20 04:30	106.0	↓-1.4
4/20 04:40	104.3	↓-1.7
4/20 04:50	102.3	↓-2.0
4/20 05:00	100.1	↓-2.2
4/20 05:10	97.5	↓-2.6
4/20 05:20	94.7	↓-2.8
4/20 05:30	91.6	↓-3.1
4/20 05:40	88.4	↓-3.2
4/20 05:50	84.9	↓-3.5
4/20 06:00	81.2	↓-3.7
4/20 06:10	77.4	↓-3.8
4/20 06:20	73.5	↓-3.9
4/20 06:30	69.5	↓-4.0
4/20 06:40	65.4	↓-4.1
4/20 06:50	61.3	↓-4.1
4/20 07:00	57.1	↓-4.2
4/20 07:10	53.0	↓-4.1
4/20 07:20	49.0	↓-4.0
4/20 07:30	45.0	↓-4.0
4/20 07:40	41.1	↓-3.9
4/20 07:50	37.3	↓-3.8
4/20 08:00	33.8	↓-3.5
4/20 08:10	30.4	↓-3.4
4/20 08:20	27.2	↓-3.2
4/20 08:30	24.2	↓-3.0
4/20 08:40	21.5	↓-2.7
4/20 08:50	19.1	↓-2.4
4/20 09:00	17.0	↓-2.1
4/20 09:10	15.2	↓-1.8
4/20 09:20	13.7	↓-1.5
4/20 09:30	12.5	↓-1.2
4/20 09:40	11.6	↓-0.9
4/20 09:50	11.2	↓-0.4	干潮
4/20 10:00	11.0	↓-0.2	干潮
4/20 10:10	11.2	↑0.2
4/20 10:20	11.7	↑0.5
4/20 10:30	12.6	↑0.9
4/20 10:40	13.8	↑1.2
4/20 10:50	15.4	↑1.6
4/20 11:00	17.2	↑1.8
4/20 11:10	19.4	↑2.2
4/20 11:20	21.8	↑2.4
4/20 11:30	24.5	↑2.7
4/20 11:40	27.4	↑2.9
4/20 11:50	30.6	↑3.2
4/20 12:00	34.0	↑3.4
4/20 12:10	37.6	↑3.6
4/20 12:20	41.4	↑3.8
4/20 12:30	45.3	↑3.9
4/20 12:40	49.3	↑4.0
4/20 12:50	53.4	↑4.1
4/20 13:00	57.5	↑4.1
4/20 13:10	61.8	↑4.3	最大潮位差
4/20 13:20	66.0	↑4.2
4/20 13:30	70.2	↑4.2
4/20 13:40	74.3	↑4.1
4/20 13:50	78.4	↑4.1
4/20 14:00	82.4	↑4.0
4/20 14:10	86.3	↑3.9
4/20 14:20	90.1	↑3.8
4/20 14:30	93.6	↑3.5
4/20 14:40	97.0	↑3.4
4/20 14:50	100.2	↑3.2
4/20 15:00	103.1	↑2.9
4/20 15:10	105.9	↑2.8
4/20 15:20	108.3	↑2.4
4/20 15:30	110.5	↑2.2
4/20 15:40	112.3	↑1.8
4/20 15:50	113.9	↑1.6
4/20 16:00	115.1	↑1.2
4/20 16:10	116.1	↑1.0
4/20 16:20	116.7	↑0.6
4/20 16:30	117.0	↑0.3	満潮
4/20 16:40	116.9	↓-0.1
4/20 16:50	116.6	↓-0.3
4/20 17:00	115.9	↓-0.7
4/20 17:10	114.9	↓-1.0
4/20 17:20	113.6	↓-1.3
4/20 17:30	112.0	↓-1.6
4/20 17:40	110.2	↓-1.8
4/20 17:50	108.1	↓-2.1
4/20 18:00	105.7	↓-2.4
4/20 18:10	103.2	↓-2.5
4/20 18:20	100.4	↓-2.8
4/20 18:30	97.5	↓-2.9
4/20 18:40	94.4	↓-3.1
4/20 18:50	91.2	↓-3.2
4/20 19:00	87.9	↓-3.3
4/20 19:10	84.6	↓-3.3
4/20 19:20	81.2	↓-3.4
4/20 19:30	77.7	↓-3.5
4/20 19:40	74.4	↓-3.3
4/20 19:50	71.0	↓-3.4
4/20 20:00	67.7	↓-3.3
4/20 20:10	64.6	↓-3.1
4/20 20:20	61.5	↓-3.1
4/20 20:30	58.6	↓-2.9
4/20 20:40	55.9	↓-2.7
4/20 20:50	53.4	↓-2.5
4/20 21:00	51.0	↓-2.4
4/20 21:10	49.0	↓-2.0
4/20 21:20	47.1	↓-1.9
4/20 21:30	45.5	↓-1.6
4/20 21:40	44.2	↓-1.3
4/20 21:50	43.2	↓-1.0
4/20 22:00	42.4	↓-0.8
4/20 22:10	42.0	↓-0.4
4/20 22:20	41.8	↓-0.2	干潮
4/20 22:30	41.9	↑0.1
4/20 22:40	42.3	↑0.4
4/20 22:50	43.0	↑0.7
4/20 23:00	44.0	↑1.0
4/20 23:10	45.2	↑1.2
4/20 23:20	46.7	↑1.5
4/20 23:30	48.5	↑1.8
4/20 23:40	50.4	↑1.9
4/20 23:50	52.6	↑2.2