9 (木)	11:08	03:17	20:43	15:57
	110cm	47cm	109cm	99cm
小潮 出 05:39 入 17:12 出 23:40 入 12:56

那珂湊（茨城）2031年10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
10/9 00:00	72.9	↓-2.4	最大潮位差
10/9 00:10	70.6	↓-2.3
10/9 00:20	68.3	↓-2.3
10/9 00:30	66.0	↓-2.3
10/9 00:40	63.9	↓-2.1
10/9 00:50	61.8	↓-2.1
10/9 01:00	59.8	↓-2.0
10/9 01:10	58.0	↓-1.8
10/9 01:20	56.2	↓-1.8
10/9 01:30	54.6	↓-1.6
10/9 01:40	53.1	↓-1.5
10/9 01:50	51.7	↓-1.4
10/9 02:00	50.5	↓-1.2
10/9 02:10	49.5	↓-1.0
10/9 02:20	48.6	↓-0.9
10/9 02:30	47.8	↓-0.8
10/9 02:40	47.2	↓-0.6
10/9 02:50	46.7	↓-0.5
10/9 03:00	46.4	↓-0.3
10/9 03:10	46.2	↓-0.2	干潮
10/9 03:20	46.2	0
10/9 03:30	46.3	↑0.1
10/9 03:40	46.6	↑0.3
10/9 03:50	47.0	↑0.4
10/9 04:00	47.6	↑0.6
10/9 04:10	48.3	↑0.7
10/9 04:20	49.1	↑0.8
10/9 04:30	50.0	↑0.9
10/9 04:40	51.1	↑1.1
10/9 04:50	52.3	↑1.2
10/9 05:00	53.6	↑1.3
10/9 05:10	55.0	↑1.4
10/9 05:20	56.5	↑1.5
10/9 05:30	58.2	↑1.7
10/9 05:40	59.9	↑1.7
10/9 05:50	61.7	↑1.8
10/9 06:00	63.5	↑1.8
10/9 06:10	65.5	↑2.0
10/9 06:20	67.5	↑2.0
10/9 06:30	69.6	↑2.1
10/9 06:40	71.7	↑2.1
10/9 06:50	73.8	↑2.1
10/9 07:00	76.0	↑2.2
10/9 07:10	78.1	↑2.1
10/9 07:20	80.3	↑2.2
10/9 07:30	82.5	↑2.2
10/9 07:40	84.6	↑2.1
10/9 07:50	86.7	↑2.1
10/9 08:00	88.8	↑2.1
10/9 08:10	90.8	↑2.0
10/9 08:20	92.8	↑2.0
10/9 08:30	94.6	↑1.8
10/9 08:40	96.4	↑1.8
10/9 08:50	98.1	↑1.7
10/9 09:00	99.7	↑1.6
10/9 09:10	101.2	↑1.5
10/9 09:20	102.6	↑1.4
10/9 09:30	103.8	↑1.2
10/9 09:40	104.9	↑1.1
10/9 09:50	105.9	↑1.0
10/9 10:00	106.8	↑0.9
10/9 10:10	107.5	↑0.7
10/9 10:20	108.1	↑0.6
10/9 10:30	108.6	↑0.5
10/9 10:40	108.9	↑0.3
10/9 10:50	109.2	↑0.3
10/9 11:00	109.3	↑0.1	満潮
10/9 11:10	109.3	0
10/9 11:20	109.2	↓-0.1
10/9 11:30	109.1	↓-0.1
10/9 11:40	108.8	↓-0.3
10/9 11:50	108.5	↓-0.3
10/9 12:00	108.1	↓-0.4
10/9 12:10	107.6	↓-0.5
10/9 12:20	107.1	↓-0.5
10/9 12:30	106.6	↓-0.5
10/9 12:40	106.0	↓-0.6
10/9 12:50	105.5	↓-0.5
10/9 13:00	104.9	↓-0.6
10/9 13:10	104.3	↓-0.6
10/9 13:20	103.7	↓-0.6
10/9 13:30	103.1	↓-0.6
10/9 13:40	102.6	↓-0.5
10/9 13:50	102.0	↓-0.6
10/9 14:00	101.5	↓-0.5
10/9 14:10	101.0	↓-0.5
10/9 14:20	100.6	↓-0.4
10/9 14:30	100.2	↓-0.4
10/9 14:40	99.8	↓-0.4
10/9 14:50	99.5	↓-0.3
10/9 15:00	99.2	↓-0.3
10/9 15:10	99.0	↓-0.2
10/9 15:20	98.8	↓-0.2
10/9 15:30	98.7	↓-0.1
10/9 15:40	98.6	↓-0.1
10/9 15:50	98.5	↓-0.1	干潮
10/9 16:00	98.5	0
10/9 16:10	98.6	↑0.1
10/9 16:20	98.7	↑0.1
10/9 16:30	98.8	↑0.1
10/9 16:40	99.0	↑0.2
10/9 16:50	99.2	↑0.2
10/9 17:00	99.4	↑0.2
10/9 17:10	99.7	↑0.3
10/9 17:20	100.0	↑0.3
10/9 17:30	100.4	↑0.4
10/9 17:40	100.8	↑0.4
10/9 17:50	101.2	↑0.4
10/9 18:00	101.7	↑0.5
10/9 18:10	102.2	↑0.5
10/9 18:20	102.6	↑0.4
10/9 18:30	103.1	↑0.5
10/9 18:40	103.7	↑0.6
10/9 18:50	104.2	↑0.5
10/9 19:00	104.7	↑0.5
10/9 19:10	105.2	↑0.5
10/9 19:20	105.7	↑0.5
10/9 19:30	106.2	↑0.5
10/9 19:40	106.6	↑0.4
10/9 19:50	107.0	↑0.4
10/9 20:00	107.3	↑0.3
10/9 20:10	107.6	↑0.3
10/9 20:20	107.8	↑0.2
10/9 20:30	108.0	↑0.2
10/9 20:40	108.0	0	満潮
10/9 20:50	108.0	0
10/9 21:00	107.9	↓-0.1
10/9 21:10	107.7	↓-0.2
10/9 21:20	107.3	↓-0.4
10/9 21:30	106.9	↓-0.4
10/9 21:40	106.3	↓-0.6
10/9 21:50	105.7	↓-0.6
10/9 22:00	104.9	↓-0.8
10/9 22:10	104.0	↓-0.9
10/9 22:20	102.9	↓-1.1
10/9 22:30	101.8	↓-1.1
10/9 22:40	100.5	↓-1.3
10/9 22:50	99.2	↓-1.3
10/9 23:00	97.7	↓-1.5
10/9 23:10	96.1	↓-1.6
10/9 23:20	94.4	↓-1.7
10/9 23:30	92.7	↓-1.7
10/9 23:40	90.9	↓-1.8
10/9 23:50	89.0	↓-1.9