2 (水)	00:43	06:15	10:44	18:11
	91cm	74cm	87cm	28cm
若潮 出 05:24 入 18:01 出 12:43 入 01:51

那珂湊（茨城）2031年04月2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
4/2 00:00	89.9	↑0.5
4/2 00:10	90.3	↑0.4
4/2 00:20	90.7	↑0.4
4/2 00:30	90.8	↑0.1
4/2 00:40	90.9	↑0.1	満潮
4/2 00:50	90.9	0
4/2 01:00	90.7	↓-0.2
4/2 01:10	90.5	↓-0.2
4/2 01:20	90.2	↓-0.3
4/2 01:30	89.8	↓-0.4
4/2 01:40	89.3	↓-0.5
4/2 01:50	88.8	↓-0.5
4/2 02:00	88.2	↓-0.6
4/2 02:10	87.6	↓-0.6
4/2 02:20	86.9	↓-0.7
4/2 02:30	86.2	↓-0.7
4/2 02:40	85.4	↓-0.8
4/2 02:50	84.6	↓-0.8
4/2 03:00	83.8	↓-0.8
4/2 03:10	83.0	↓-0.8
4/2 03:20	82.2	↓-0.8
4/2 03:30	81.4	↓-0.8
4/2 03:40	80.6	↓-0.8
4/2 03:50	79.8	↓-0.8
4/2 04:00	79.1	↓-0.7
4/2 04:10	78.4	↓-0.7
4/2 04:20	77.7	↓-0.7
4/2 04:30	77.0	↓-0.7
4/2 04:40	76.4	↓-0.6
4/2 04:50	75.8	↓-0.6
4/2 05:00	75.3	↓-0.5
4/2 05:10	74.8	↓-0.5
4/2 05:20	74.4	↓-0.4
4/2 05:30	74.1	↓-0.3
4/2 05:40	73.8	↓-0.3
4/2 05:50	73.6	↓-0.2
4/2 06:00	73.4	↓-0.2
4/2 06:10	73.4	0	干潮
4/2 06:20	73.4	0
4/2 06:30	73.5	↑0.1
4/2 06:40	73.6	↑0.1
4/2 06:50	73.8	↑0.2
4/2 07:00	74.2	↑0.4
4/2 07:10	74.5	↑0.3
4/2 07:20	75.0	↑0.5
4/2 07:30	75.5	↑0.5
4/2 07:40	76.0	↑0.5
4/2 07:50	76.6	↑0.6
4/2 08:00	77.3	↑0.7
4/2 08:10	78.0	↑0.7
4/2 08:20	78.7	↑0.7
4/2 08:30	79.4	↑0.7
4/2 08:40	80.2	↑0.8
4/2 08:50	80.9	↑0.7
4/2 09:00	81.7	↑0.8
4/2 09:10	82.4	↑0.7
4/2 09:20	83.1	↑0.7
4/2 09:30	83.7	↑0.6
4/2 09:40	84.3	↑0.6
4/2 09:50	84.9	↑0.6
4/2 10:00	85.3	↑0.4
4/2 10:10	85.7	↑0.4
4/2 10:20	86.0	↑0.3
4/2 10:30	86.2	↑0.2
4/2 10:40	86.3	↑0.1	満潮
4/2 10:50	86.2	↓-0.1
4/2 11:00	86.1	↓-0.1
4/2 11:10	85.8	↓-0.3
4/2 11:20	85.5	↓-0.3
4/2 11:30	85.0	↓-0.5
4/2 11:40	84.3	↓-0.7
4/2 11:50	83.5	↓-0.8
4/2 12:00	82.7	↓-0.8
4/2 12:10	81.6	↓-1.1
4/2 12:20	80.5	↓-1.1
4/2 12:30	79.2	↓-1.3
4/2 12:40	77.9	↓-1.3
4/2 12:50	76.4	↓-1.5
4/2 13:00	74.8	↓-1.6
4/2 13:10	73.2	↓-1.6
4/2 13:20	71.4	↓-1.8
4/2 13:30	69.6	↓-1.8
4/2 13:40	67.7	↓-1.9
4/2 13:50	65.8	↓-1.9
4/2 14:00	63.8	↓-2.0
4/2 14:10	61.8	↓-2.0
4/2 14:20	59.7	↓-2.1
4/2 14:30	57.6	↓-2.1
4/2 14:40	55.6	↓-2.0
4/2 14:50	53.5	↓-2.1
4/2 15:00	51.4	↓-2.1
4/2 15:10	49.4	↓-2.0
4/2 15:20	47.4	↓-2.0
4/2 15:30	45.4	↓-2.0
4/2 15:40	43.5	↓-1.9
4/2 15:50	41.7	↓-1.8
4/2 16:00	39.9	↓-1.8
4/2 16:10	38.2	↓-1.7
4/2 16:20	36.7	↓-1.5
4/2 16:30	35.2	↓-1.5
4/2 16:40	33.8	↓-1.4
4/2 16:50	32.5	↓-1.3
4/2 17:00	31.4	↓-1.1
4/2 17:10	30.4	↓-1.0
4/2 17:20	29.5	↓-0.9
4/2 17:30	28.8	↓-0.7
4/2 17:40	28.2	↓-0.6
4/2 17:50	27.8	↓-0.4
4/2 18:00	27.6	↓-0.2
4/2 18:10	27.5	↓-0.1	干潮
4/2 18:20	27.5	0
4/2 18:30	27.8	↑0.3
4/2 18:40	28.2	↑0.4
4/2 18:50	28.8	↑0.6
4/2 19:00	29.6	↑0.8
4/2 19:10	30.5	↑0.9
4/2 19:20	31.6	↑1.1
4/2 19:30	32.9	↑1.3
4/2 19:40	34.3	↑1.4
4/2 19:50	35.9	↑1.6
4/2 20:00	37.6	↑1.7
4/2 20:10	39.4	↑1.8
4/2 20:20	41.4	↑2.0
4/2 20:30	43.5	↑2.1
4/2 20:40	45.7	↑2.2
4/2 20:50	48.0	↑2.3
4/2 21:00	50.3	↑2.3
4/2 21:10	52.7	↑2.4
4/2 21:20	55.2	↑2.5
4/2 21:30	57.7	↑2.5
4/2 21:40	60.3	↑2.6	最大潮位差
4/2 21:50	62.8	↑2.5
4/2 22:00	65.3	↑2.5
4/2 22:10	67.8	↑2.5
4/2 22:20	70.3	↑2.5
4/2 22:30	72.7	↑2.4
4/2 22:40	75.1	↑2.4
4/2 22:50	77.3	↑2.2
4/2 23:00	79.5	↑2.2
4/2 23:10	81.6	↑2.1
4/2 23:20	83.5	↑1.9
4/2 23:30	85.4	↑1.9
4/2 23:40	87.1	↑1.7
4/2 23:50	88.6	↑1.5