1 (月)	14:15	06:17	23:43	19:43
	119cm	43cm	109cm	98cm
長潮 出 05:33 入 17:22 出 00:18 入 15:07

那珂湊（茨城）2040年10月1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
10/1 00:00	101.4	↓-1.2
10/1 00:10	100.1	↓-1.3
10/1 00:20	98.6	↓-1.5
10/1 00:30	97.1	↓-1.5
10/1 00:40	95.5	↓-1.6
10/1 00:50	93.8	↓-1.7
10/1 01:00	92.0	↓-1.8
10/1 01:10	90.2	↓-1.8
10/1 01:20	88.3	↓-1.9
10/1 01:30	86.3	↓-2.0
10/1 01:40	84.3	↓-2.0
10/1 01:50	82.3	↓-2.0
10/1 02:00	80.2	↓-2.1
10/1 02:10	78.1	↓-2.1
10/1 02:20	76.0	↓-2.1
10/1 02:30	73.9	↓-2.1
10/1 02:40	71.7	↓-2.2
10/1 02:50	69.6	↓-2.1
10/1 03:00	67.6	↓-2.0
10/1 03:10	65.5	↓-2.1
10/1 03:20	63.5	↓-2.0
10/1 03:30	61.5	↓-2.0
10/1 03:40	59.6	↓-1.9
10/1 03:50	57.7	↓-1.9
10/1 04:00	56.0	↓-1.7
10/1 04:10	54.3	↓-1.7
10/1 04:20	52.6	↓-1.7
10/1 04:30	51.1	↓-1.5
10/1 04:40	49.7	↓-1.4
10/1 04:50	48.4	↓-1.3
10/1 05:00	47.2	↓-1.2
10/1 05:10	46.2	↓-1.0
10/1 05:20	45.2	↓-1.0
10/1 05:30	44.4	↓-0.8
10/1 05:40	43.8	↓-0.6
10/1 05:50	43.3	↓-0.5
10/1 06:00	43.0	↓-0.3
10/1 06:10	42.8	↓-0.2	干潮
10/1 06:20	42.8	0
10/1 06:30	42.9	↑0.1
10/1 06:40	43.2	↑0.3
10/1 06:50	43.7	↑0.5
10/1 07:00	44.4	↑0.7
10/1 07:10	45.2	↑0.8
10/1 07:20	46.2	↑1.0
10/1 07:30	47.3	↑1.1
10/1 07:40	48.7	↑1.4
10/1 07:50	50.1	↑1.4
10/1 08:00	51.7	↑1.6
10/1 08:10	53.5	↑1.8
10/1 08:20	55.4	↑1.9
10/1 08:30	57.4	↑2.0
10/1 08:40	59.6	↑2.2
10/1 08:50	61.8	↑2.2
10/1 09:00	64.1	↑2.3
10/1 09:10	66.5	↑2.4
10/1 09:20	69.0	↑2.5
10/1 09:30	71.6	↑2.6
10/1 09:40	74.1	↑2.5
10/1 09:50	76.7	↑2.6
10/1 10:00	79.3	↑2.6
10/1 10:10	82.0	↑2.7	最大潮位差
10/1 10:20	84.6	↑2.6
10/1 10:30	87.1	↑2.5
10/1 10:40	89.7	↑2.6
10/1 10:50	92.2	↑2.5
10/1 11:00	94.6	↑2.4
10/1 11:10	96.9	↑2.3
10/1 11:20	99.2	↑2.3
10/1 11:30	101.3	↑2.1
10/1 11:40	103.4	↑2.1
10/1 11:50	105.3	↑1.9
10/1 12:00	107.2	↑1.9
10/1 12:10	108.9	↑1.7
10/1 12:20	110.5	↑1.6
10/1 12:30	111.9	↑1.4
10/1 12:40	113.2	↑1.3
10/1 12:50	114.4	↑1.2
10/1 13:00	115.5	↑1.1
10/1 13:10	116.4	↑0.9
10/1 13:20	117.1	↑0.7
10/1 13:30	117.8	↑0.7
10/1 13:40	118.2	↑0.4
10/1 13:50	118.6	↑0.4
10/1 14:00	118.8	↑0.2
10/1 14:10	118.9	↑0.1	満潮
10/1 14:20	118.9	0
10/1 14:30	118.8	↓-0.1
10/1 14:40	118.6	↓-0.2
10/1 14:50	118.2	↓-0.4
10/1 15:00	117.8	↓-0.4
10/1 15:10	117.3	↓-0.5
10/1 15:20	116.6	↓-0.7
10/1 15:30	116.0	↓-0.6
10/1 15:40	115.2	↓-0.8
10/1 15:50	114.4	↓-0.8
10/1 16:00	113.5	↓-0.9
10/1 16:10	112.6	↓-0.9
10/1 16:20	111.6	↓-1.0
10/1 16:30	110.6	↓-1.0
10/1 16:40	109.6	↓-1.0
10/1 16:50	108.6	↓-1.0
10/1 17:00	107.6	↓-1.0
10/1 17:10	106.5	↓-1.1
10/1 17:20	105.5	↓-1.0
10/1 17:30	104.6	↓-0.9
10/1 17:40	103.6	↓-1.0
10/1 17:50	102.7	↓-0.9
10/1 18:00	101.9	↓-0.8
10/1 18:10	101.1	↓-0.8
10/1 18:20	100.3	↓-0.8
10/1 18:30	99.7	↓-0.6
10/1 18:40	99.1	↓-0.6
10/1 18:50	98.6	↓-0.5
10/1 19:00	98.1	↓-0.5
10/1 19:10	97.8	↓-0.3
10/1 19:20	97.6	↓-0.2
10/1 19:30	97.4	↓-0.2
10/1 19:40	97.3	↓-0.1	干潮
10/1 19:50	97.4	↑0.1
10/1 20:00	97.5	↑0.1
10/1 20:10	97.7	↑0.2
10/1 20:20	98.0	↑0.3
10/1 20:30	98.3	↑0.3
10/1 20:40	98.8	↑0.5
10/1 20:50	99.3	↑0.5
10/1 21:00	99.8	↑0.5
10/1 21:10	100.4	↑0.6
10/1 21:20	101.1	↑0.7
10/1 21:30	101.7	↑0.6
10/1 21:40	102.4	↑0.7
10/1 21:50	103.1	↑0.7
10/1 22:00	103.8	↑0.7
10/1 22:10	104.5	↑0.7
10/1 22:20	105.2	↑0.7
10/1 22:30	105.8	↑0.6
10/1 22:40	106.4	↑0.6
10/1 22:50	106.9	↑0.5
10/1 23:00	107.4	↑0.5
10/1 23:10	107.7	↑0.3
10/1 23:20	108.0	↑0.3
10/1 23:30	108.2	↑0.2
10/1 23:40	108.3	↑0.1	満潮
10/1 23:50	108.3	0