9 (水)	04:23	10:55	17:44	23:11
	110cm	4cm	113cm	53cm
中潮 出 05:14 入 18:07 出 19:58 入 05:47 潮干狩り ◎ 08:44～13:08

那珂湊（茨城）2031年04月9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
4/9 00:00	52.9	↑1.9
4/9 00:10	55.1	↑2.2
4/9 00:20	57.4	↑2.3
4/9 00:30	59.9	↑2.5
4/9 00:40	62.5	↑2.6
4/9 00:50	65.2	↑2.7
4/9 01:00	68.0	↑2.8
4/9 01:10	70.9	↑2.9
4/9 01:20	73.8	↑2.9
4/9 01:30	76.7	↑2.9
4/9 01:40	79.7	↑3.0
4/9 01:50	82.6	↑2.9
4/9 02:00	85.5	↑2.9
4/9 02:10	88.3	↑2.8
4/9 02:20	91.0	↑2.7
4/9 02:30	93.6	↑2.6
4/9 02:40	96.1	↑2.5
4/9 02:50	98.5	↑2.4
4/9 03:00	100.6	↑2.1
4/9 03:10	102.6	↑2.0
4/9 03:20	104.4	↑1.8
4/9 03:30	105.9	↑1.5
4/9 03:40	107.2	↑1.3
4/9 03:50	108.3	↑1.1
4/9 04:00	109.0	↑0.7
4/9 04:10	109.5	↑0.5
4/9 04:20	109.7	↑0.2	満潮
4/9 04:30	109.7	0
4/9 04:40	109.3	↓-0.4
4/9 04:50	108.6	↓-0.7
4/9 05:00	107.6	↓-1.0
4/9 05:10	106.3	↓-1.3
4/9 05:20	104.7	↓-1.6
4/9 05:30	102.8	↓-1.9
4/9 05:40	100.6	↓-2.2
4/9 05:50	98.1	↓-2.5
4/9 06:00	95.3	↓-2.8
4/9 06:10	92.3	↓-3.0
4/9 06:20	89.1	↓-3.2
4/9 06:30	85.6	↓-3.5
4/9 06:40	82.0	↓-3.6
4/9 06:50	78.2	↓-3.8
4/9 07:00	74.2	↓-4.0
4/9 07:10	70.1	↓-4.1
4/9 07:20	65.8	↓-4.3
4/9 07:30	61.6	↓-4.2
4/9 07:40	57.2	↓-4.4	最大潮位差
4/9 07:50	52.9	↓-4.3
4/9 08:00	48.6	↓-4.3
4/9 08:10	44.3	↓-4.3
4/9 08:20	40.1	↓-4.2
4/9 08:30	36.0	↓-4.1
4/9 08:40	32.1	↓-3.9
4/9 08:50	28.3	↓-3.8
4/9 09:00	24.7	↓-3.6
4/9 09:10	21.3	↓-3.4
4/9 09:20	18.1	↓-3.2
4/9 09:30	15.2	↓-2.9
4/9 09:40	12.6	↓-2.6
4/9 09:50	10.3	↓-2.3
4/9 10:00	8.3	↓-2.0
4/9 10:10	6.6	↓-1.7
4/9 10:20	5.3	↓-1.3
4/9 10:30	4.3	↓-1.0
4/9 10:40	3.6	↓-0.7
4/9 10:50	3.3	↓-0.3	干潮
4/9 11:00	3.4	↑0.1
4/9 11:10	3.7	↑0.3
4/9 11:20	4.5	↑0.8
4/9 11:30	5.5	↑1.0
4/9 11:40	6.9	↑1.4
4/9 11:50	8.6	↑1.7
4/9 12:00	10.6	↑2.0
4/9 12:10	12.9	↑2.3
4/9 12:20	15.5	↑2.6
4/9 12:30	18.3	↑2.8
4/9 12:40	21.3	↑3.0
4/9 12:50	24.6	↑3.3
4/9 13:00	28.0	↑3.4
4/9 13:10	31.7	↑3.7
4/9 13:20	35.4	↑3.7
4/9 13:30	39.3	↑3.9
4/9 13:40	43.3	↑4.0
4/9 13:50	47.4	↑4.1
4/9 14:00	51.6	↑4.2
4/9 14:10	55.7	↑4.1
4/9 14:20	59.9	↑4.2
4/9 14:30	64.1	↑4.2
4/9 14:40	68.2	↑4.1
4/9 14:50	72.2	↑4.0
4/9 15:00	76.2	↑4.0
4/9 15:10	80.0	↑3.8
4/9 15:20	83.7	↑3.7
4/9 15:30	87.3	↑3.6
4/9 15:40	90.7	↑3.4
4/9 15:50	93.9	↑3.2
4/9 16:00	96.9	↑3.0
4/9 16:10	99.7	↑2.8
4/9 16:20	102.2	↑2.5
4/9 16:30	104.4	↑2.2
4/9 16:40	106.4	↑2.0
4/9 16:50	108.2	↑1.8
4/9 17:00	109.6	↑1.4
4/9 17:10	110.7	↑1.1
4/9 17:20	111.6	↑0.9
4/9 17:30	112.1	↑0.5
4/9 17:40	112.4	↑0.3	満潮
4/9 17:50	112.3	↓-0.1
4/9 18:00	112.0	↓-0.3
4/9 18:10	111.3	↓-0.7
4/9 18:20	110.4	↓-0.9
4/9 18:30	109.2	↓-1.2
4/9 18:40	107.8	↓-1.4
4/9 18:50	106.1	↓-1.7
4/9 19:00	104.2	↓-1.9
4/9 19:10	102.1	↓-2.1
4/9 19:20	99.8	↓-2.3
4/9 19:30	97.4	↓-2.4
4/9 19:40	94.8	↓-2.6
4/9 19:50	92.1	↓-2.7
4/9 20:00	89.3	↓-2.8
4/9 20:10	86.5	↓-2.8
4/9 20:20	83.6	↓-2.9
4/9 20:30	80.7	↓-2.9
4/9 20:40	77.9	↓-2.8
4/9 20:50	75.1	↓-2.8
4/9 21:00	72.3	↓-2.8
4/9 21:10	69.7	↓-2.6
4/9 21:20	67.2	↓-2.5
4/9 21:30	64.8	↓-2.4
4/9 21:40	62.6	↓-2.2
4/9 21:50	60.6	↓-2.0
4/9 22:00	58.8	↓-1.8
4/9 22:10	57.2	↓-1.6
4/9 22:20	55.9	↓-1.3
4/9 22:30	54.7	↓-1.2
4/9 22:40	53.8	↓-0.9
4/9 22:50	53.2	↓-0.6
4/9 23:00	52.8	↓-0.4
4/9 23:10	52.7	↓-0.1	干潮
4/9 23:20	52.8	↑0.1
4/9 23:30	53.2	↑0.4
4/9 23:40	53.9	↑0.7
4/9 23:50	54.7	↑0.8