18 (日)	06:39	00:38	20:07	13:20
	107cm	52cm	92cm	21cm
中潮 出 05:45 入 17:49 出 08:40 入 23:08 潮干狩り ○ 11:48～14:56

那珂湊（茨城）2040年03月18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
3/18 00:00	53.1	↓-0.9
3/18 00:10	52.4	↓-0.7
3/18 00:20	52.0	↓-0.4
3/18 00:30	51.7	↓-0.3	干潮
3/18 00:40	51.7	0
3/18 00:50	51.8	↑0.1
3/18 01:00	52.2	↑0.4
3/18 01:10	52.8	↑0.6
3/18 01:20	53.5	↑0.7
3/18 01:30	54.5	↑1.0
3/18 01:40	55.6	↑1.1
3/18 01:50	56.9	↑1.3
3/18 02:00	58.4	↑1.5
3/18 02:10	60.0	↑1.6
3/18 02:20	61.7	↑1.7
3/18 02:30	63.6	↑1.9
3/18 02:40	65.6	↑2.0
3/18 02:50	67.6	↑2.0
3/18 03:00	69.8	↑2.2
3/18 03:10	72.0	↑2.2
3/18 03:20	74.2	↑2.2
3/18 03:30	76.5	↑2.3
3/18 03:40	78.9	↑2.4
3/18 03:50	81.2	↑2.3
3/18 04:00	83.5	↑2.3
3/18 04:10	85.8	↑2.3
3/18 04:20	88.0	↑2.2
3/18 04:30	90.2	↑2.2
3/18 04:40	92.3	↑2.1
3/18 04:50	94.3	↑2.0
3/18 05:00	96.2	↑1.9
3/18 05:10	98.0	↑1.8
3/18 05:20	99.6	↑1.6
3/18 05:30	101.1	↑1.5
3/18 05:40	102.4	↑1.3
3/18 05:50	103.5	↑1.1
3/18 06:00	104.4	↑0.9
3/18 06:10	105.2	↑0.8
3/18 06:20	105.7	↑0.5
3/18 06:30	106.0	↑0.3	満潮
3/18 06:40	106.1	↑0.1
3/18 06:50	105.9	↓-0.2
3/18 07:00	105.5	↓-0.4
3/18 07:10	104.8	↓-0.7
3/18 07:20	103.9	↓-0.9
3/18 07:30	102.7	↓-1.2
3/18 07:40	101.4	↓-1.3
3/18 07:50	99.7	↓-1.7
3/18 08:00	97.9	↓-1.8
3/18 08:10	95.8	↓-2.1
3/18 08:20	93.5	↓-2.3
3/18 08:30	91.0	↓-2.5
3/18 08:40	88.3	↓-2.7
3/18 08:50	85.5	↓-2.8
3/18 09:00	82.5	↓-3.0
3/18 09:10	79.4	↓-3.1
3/18 09:20	76.2	↓-3.2
3/18 09:30	72.9	↓-3.3
3/18 09:40	69.5	↓-3.4
3/18 09:50	66.1	↓-3.4
3/18 10:00	62.7	↓-3.4
3/18 10:10	59.2	↓-3.5	最大潮位差
3/18 10:20	55.8	↓-3.4
3/18 10:30	52.5	↓-3.3
3/18 10:40	49.2	↓-3.3
3/18 10:50	46.0	↓-3.2
3/18 11:00	43.0	↓-3.0
3/18 11:10	40.1	↓-2.9
3/18 11:20	37.3	↓-2.8
3/18 11:30	34.7	↓-2.6
3/18 11:40	32.3	↓-2.4
3/18 11:50	30.1	↓-2.2
3/18 12:00	28.1	↓-2.0
3/18 12:10	26.3	↓-1.8
3/18 12:20	24.8	↓-1.5
3/18 12:30	23.5	↓-1.3
3/18 12:40	22.4	↓-1.1
3/18 12:50	21.6	↓-0.8
3/18 13:00	21.0	↓-0.6
3/18 13:10	20.7	↓-0.3	干潮
3/18 13:20	20.6	↓-0.1	干潮
3/18 13:30	20.7	↑0.1
3/18 13:40	21.1	↑0.4
3/18 13:50	21.7	↑0.6
3/18 14:00	22.5	↑0.8
3/18 14:10	23.6	↑1.1
3/18 14:20	24.8	↑1.2
3/18 14:30	26.2	↑1.4
3/18 14:40	27.8	↑1.6
3/18 14:50	29.6	↑1.8
3/18 15:00	31.5	↑1.9
3/18 15:10	33.6	↑2.1
3/18 15:20	35.8	↑2.2
3/18 15:30	38.1	↑2.3
3/18 15:40	40.5	↑2.4
3/18 15:50	43.0	↑2.5
3/18 16:00	45.6	↑2.6
3/18 16:10	48.3	↑2.7
3/18 16:20	50.9	↑2.6
3/18 16:30	53.7	↑2.8
3/18 16:40	56.4	↑2.7
3/18 16:50	59.1	↑2.7
3/18 17:00	61.8	↑2.7
3/18 17:10	64.5	↑2.7
3/18 17:20	67.1	↑2.6
3/18 17:30	69.7	↑2.6
3/18 17:40	72.1	↑2.4
3/18 17:50	74.5	↑2.4
3/18 18:00	76.8	↑2.3
3/18 18:10	79.0	↑2.2
3/18 18:20	81.0	↑2.0
3/18 18:30	82.9	↑1.9
3/18 18:40	84.6	↑1.7
3/18 18:50	86.2	↑1.6
3/18 19:00	87.5	↑1.3
3/18 19:10	88.7	↑1.2
3/18 19:20	89.7	↑1.0
3/18 19:30	90.6	↑0.9
3/18 19:40	91.2	↑0.6
3/18 19:50	91.6	↑0.4
3/18 20:00	91.8	↑0.2	満潮
3/18 20:10	91.8	0
3/18 20:20	91.6	↓-0.2
3/18 20:30	91.3	↓-0.3
3/18 20:40	90.7	↓-0.6
3/18 20:50	90.0	↓-0.7
3/18 21:00	89.1	↓-0.9
3/18 21:10	88.1	↓-1.0
3/18 21:20	86.9	↓-1.2
3/18 21:30	85.6	↓-1.3
3/18 21:40	84.3	↓-1.3
3/18 21:50	82.8	↓-1.5
3/18 22:00	81.3	↓-1.5
3/18 22:10	79.7	↓-1.6
3/18 22:20	78.1	↓-1.6
3/18 22:30	76.5	↓-1.6
3/18 22:40	74.9	↓-1.6
3/18 22:50	73.3	↓-1.6
3/18 23:00	71.7	↓-1.6
3/18 23:10	70.2	↓-1.5
3/18 23:20	68.8	↓-1.4
3/18 23:30	67.5	↓-1.3
3/18 23:40	66.3	↓-1.2
3/18 23:50	65.2	↓-1.1