1 (火)	09:02	04:06	-	16:59
	89cm	80cm	-	28cm
長潮 出 05:26 入 18:00 出 11:47 入 01:13 潮干狩り ○ 15:54～18:00

那珂湊（茨城）2031年04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
4/1 00:00	86.6	↓-0.1
4/1 00:10	86.4	↓-0.2
4/1 00:20	86.1	↓-0.3
4/1 00:30	85.8	↓-0.3
4/1 00:40	85.5	↓-0.3
4/1 00:50	85.1	↓-0.4
4/1 01:00	84.6	↓-0.5
4/1 01:10	84.2	↓-0.4
4/1 01:20	83.8	↓-0.4
4/1 01:30	83.3	↓-0.5
4/1 01:40	82.8	↓-0.5
4/1 01:50	82.4	↓-0.4
4/1 02:00	82.0	↓-0.4
4/1 02:10	81.5	↓-0.5
4/1 02:20	81.1	↓-0.4
4/1 02:30	80.8	↓-0.3
4/1 02:40	80.4	↓-0.4
4/1 02:50	80.1	↓-0.3
4/1 03:00	79.9	↓-0.2
4/1 03:10	79.6	↓-0.3
4/1 03:20	79.4	↓-0.2
4/1 03:30	79.3	↓-0.1
4/1 03:40	79.1	↓-0.2
4/1 03:50	79.1	0
4/1 04:00	79.0	↓-0.1	干潮
4/1 04:10	79.0	0
4/1 04:20	79.1	↑0.1
4/1 04:30	79.1	0
4/1 04:40	79.3	↑0.2
4/1 04:50	79.4	↑0.1
4/1 05:00	79.6	↑0.2
4/1 05:10	79.9	↑0.3
4/1 05:20	80.1	↑0.2
4/1 05:30	80.5	↑0.4
4/1 05:40	80.8	↑0.3
4/1 05:50	81.2	↑0.4
4/1 06:00	81.6	↑0.4
4/1 06:10	82.0	↑0.4
4/1 06:20	82.5	↑0.5
4/1 06:30	83.0	↑0.5
4/1 06:40	83.5	↑0.5
4/1 06:50	84.0	↑0.5
4/1 07:00	84.5	↑0.5
4/1 07:10	85.1	↑0.6
4/1 07:20	85.6	↑0.5
4/1 07:30	86.1	↑0.5
4/1 07:40	86.6	↑0.5
4/1 07:50	87.0	↑0.4
4/1 08:00	87.5	↑0.5
4/1 08:10	87.9	↑0.4
4/1 08:20	88.2	↑0.3
4/1 08:30	88.5	↑0.3
4/1 08:40	88.7	↑0.2
4/1 08:50	88.8	↑0.1
4/1 09:00	88.9	↑0.1	満潮
4/1 09:10	88.9	0
4/1 09:20	88.7	↓-0.2
4/1 09:30	88.5	↓-0.2
4/1 09:40	88.1	↓-0.4
4/1 09:50	87.7	↓-0.4
4/1 10:00	87.1	↓-0.6
4/1 10:10	86.4	↓-0.7
4/1 10:20	85.6	↓-0.8
4/1 10:30	84.7	↓-0.9
4/1 10:40	83.7	↓-1.0
4/1 10:50	82.5	↓-1.2
4/1 11:00	81.2	↓-1.3
4/1 11:10	79.8	↓-1.4
4/1 11:20	78.4	↓-1.4
4/1 11:30	76.8	↓-1.6
4/1 11:40	75.1	↓-1.7
4/1 11:50	73.3	↓-1.8
4/1 12:00	71.5	↓-1.8
4/1 12:10	69.6	↓-1.9
4/1 12:20	67.6	↓-2.0
4/1 12:30	65.6	↓-2.0
4/1 12:40	63.6	↓-2.0
4/1 12:50	61.5	↓-2.1
4/1 13:00	59.4	↓-2.1
4/1 13:10	57.3	↓-2.1
4/1 13:20	55.3	↓-2.0
4/1 13:30	53.2	↓-2.1
4/1 13:40	51.2	↓-2.0
4/1 13:50	49.2	↓-2.0
4/1 14:00	47.2	↓-2.0
4/1 14:10	45.3	↓-1.9
4/1 14:20	43.5	↓-1.8
4/1 14:30	41.7	↓-1.8
4/1 14:40	40.1	↓-1.6
4/1 14:50	38.5	↓-1.6
4/1 15:00	37.0	↓-1.5
4/1 15:10	35.6	↓-1.4
4/1 15:20	34.3	↓-1.3
4/1 15:30	33.1	↓-1.2
4/1 15:40	32.0	↓-1.1
4/1 15:50	31.0	↓-1.0
4/1 16:00	30.2	↓-0.8
4/1 16:10	29.5	↓-0.7
4/1 16:20	28.9	↓-0.6
4/1 16:30	28.5	↓-0.4
4/1 16:40	28.1	↓-0.4
4/1 16:50	28.0	↓-0.1	干潮
4/1 17:00	27.9	↓-0.1
4/1 17:10	28.0	↑0.1
4/1 17:20	28.2	↑0.2
4/1 17:30	28.6	↑0.4
4/1 17:40	29.1	↑0.5
4/1 17:50	29.8	↑0.7
4/1 18:00	30.5	↑0.7
4/1 18:10	31.5	↑1.0
4/1 18:20	32.5	↑1.0
4/1 18:30	33.7	↑1.2
4/1 18:40	35.0	↑1.3
4/1 18:50	36.5	↑1.5
4/1 19:00	38.0	↑1.5
4/1 19:10	39.7	↑1.7
4/1 19:20	41.4	↑1.7
4/1 19:30	43.3	↑1.9
4/1 19:40	45.2	↑1.9
4/1 19:50	47.2	↑2.0
4/1 20:00	49.3	↑2.1
4/1 20:10	51.5	↑2.2
4/1 20:20	53.6	↑2.1
4/1 20:30	55.9	↑2.3	最大潮位差
4/1 20:40	58.1	↑2.2
4/1 20:50	60.3	↑2.2
4/1 21:00	62.5	↑2.2
4/1 21:10	64.8	↑2.3	最大潮位差
4/1 21:20	66.9	↑2.1
4/1 21:30	69.1	↑2.2
4/1 21:40	71.2	↑2.1
4/1 21:50	73.2	↑2.0
4/1 22:00	75.1	↑1.9
4/1 22:10	77.0	↑1.9
4/1 22:20	78.7	↑1.7
4/1 22:30	80.4	↑1.7
4/1 22:40	82.0	↑1.6
4/1 22:50	83.4	↑1.4
4/1 23:00	84.7	↑1.3
4/1 23:10	85.9	↑1.2
4/1 23:20	87.0	↑1.1
4/1 23:30	87.9	↑0.9
4/1 23:40	88.7	↑0.8
4/1 23:50	89.4	↑0.7