1 (月)	03:03	09:04	15:11	21:21
	106cm	34cm	109cm	28cm
出 05:25 入 18:00 出 04:09 入 16:32

那珂湊（茨城）2030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	67.3	↑3.3
4/1 00:10	70.7	↑3.4
4/1 00:20	74.0	↑3.3
4/1 00:30	77.3	↑3.3
4/1 00:40	80.5	↑3.2
4/1 00:50	83.5	↑3.0
4/1 01:00	86.4	↑2.9
4/1 01:10	89.2	↑2.8
4/1 01:20	91.8	↑2.6
4/1 01:30	94.2	↑2.4
4/1 01:40	96.4	↑2.2
4/1 01:50	98.4	↑2.0
4/1 02:00	100.2	↑1.8
4/1 02:10	101.7	↑1.5
4/1 02:20	102.9	↑1.2
4/1 02:30	103.9	↑1.0
4/1 02:40	104.7	↑0.8
4/1 02:50	105.2	↑0.5
4/1 03:00	105.4	↑0.2	満潮
4/1 03:10	105.3	↓-0.1
4/1 03:20	104.9	↓-0.4
4/1 03:30	104.3	↓-0.6
4/1 03:40	103.4	↓-0.9
4/1 03:50	102.3	↓-1.1
4/1 04:00	100.9	↓-1.4
4/1 04:10	99.3	↓-1.6
4/1 04:20	97.4	↓-1.9
4/1 04:30	95.4	↓-2.0
4/1 04:40	93.1	↓-2.3
4/1 04:50	90.7	↓-2.4
4/1 05:00	88.1	↓-2.6
4/1 05:10	85.3	↓-2.8
4/1 05:20	82.4	↓-2.9
4/1 05:30	79.5	↓-2.9
4/1 05:40	76.4	↓-3.1
4/1 05:50	73.3	↓-3.1
4/1 06:00	70.2	↓-3.1
4/1 06:10	67.1	↓-3.1
4/1 06:20	63.9	↓-3.2
4/1 06:30	60.9	↓-3.0
4/1 06:40	57.8	↓-3.1
4/1 06:50	54.9	↓-2.9
4/1 07:00	52.1	↓-2.8
4/1 07:10	49.4	↓-2.7
4/1 07:20	46.8	↓-2.6
4/1 07:30	44.5	↓-2.3
4/1 07:40	42.3	↓-2.2
4/1 07:50	40.3	↓-2.0
4/1 08:00	38.6	↓-1.7
4/1 08:10	37.0	↓-1.6
4/1 08:20	35.8	↓-1.2
4/1 08:30	34.7	↓-1.1
4/1 08:40	34.0	↓-0.7
4/1 08:50	33.5	↓-0.5
4/1 09:00	33.3	↓-0.2	干潮
4/1 09:10	33.3	0
4/1 09:20	33.7	↑0.4
4/1 09:30	34.3	↑0.6
4/1 09:40	35.1	↑0.8
4/1 09:50	36.3	↑1.2
4/1 10:00	37.6	↑1.3
4/1 10:10	39.3	↑1.7
4/1 10:20	41.1	↑1.8
4/1 10:30	43.2	↑2.1
4/1 10:40	45.5	↑2.3
4/1 10:50	47.9	↑2.4
4/1 11:00	50.5	↑2.6
4/1 11:10	53.3	↑2.8
4/1 11:20	56.2	↑2.9
4/1 11:30	59.2	↑3.0
4/1 11:40	62.3	↑3.1
4/1 11:50	65.4	↑3.1
4/1 12:00	68.6	↑3.2
4/1 12:10	71.8	↑3.2
4/1 12:20	75.0	↑3.2
4/1 12:30	78.2	↑3.2
4/1 12:40	81.3	↑3.1
4/1 12:50	84.3	↑3.0
4/1 13:00	87.2	↑2.9
4/1 13:10	90.0	↑2.8
4/1 13:20	92.7	↑2.7
4/1 13:30	95.2	↑2.5
4/1 13:40	97.6	↑2.4
4/1 13:50	99.7	↑2.1
4/1 14:00	101.6	↑1.9
4/1 14:10	103.3	↑1.7
4/1 14:20	104.8	↑1.5
4/1 14:30	106.0	↑1.2
4/1 14:40	106.9	↑0.9
4/1 14:50	107.6	↑0.7
4/1 15:00	108.0	↑0.4
4/1 15:10	108.1	↑0.1	満潮
4/1 15:20	108.0	↓-0.1
4/1 15:30	107.6	↓-0.4
4/1 15:40	106.8	↓-0.8
4/1 15:50	105.9	↓-0.9
4/1 16:00	104.6	↓-1.3
4/1 16:10	103.1	↓-1.5
4/1 16:20	101.3	↓-1.8
4/1 16:30	99.3	↓-2.0
4/1 16:40	97.0	↓-2.3
4/1 16:50	94.6	↓-2.4
4/1 17:00	91.9	↓-2.7
4/1 17:10	89.1	↓-2.8
4/1 17:20	86.1	↓-3.0
4/1 17:30	83.0	↓-3.1
4/1 17:40	79.8	↓-3.2
4/1 17:50	76.4	↓-3.4
4/1 18:00	73.1	↓-3.3
4/1 18:10	69.6	↓-3.5	最大潮位差
4/1 18:20	66.2	↓-3.4
4/1 18:30	62.7	↓-3.5	最大潮位差
4/1 18:40	59.3	↓-3.4
4/1 18:50	56.0	↓-3.3
4/1 19:00	52.7	↓-3.3
4/1 19:10	49.6	↓-3.1
4/1 19:20	46.6	↓-3.0
4/1 19:30	43.7	↓-2.9
4/1 19:40	41.0	↓-2.7
4/1 19:50	38.5	↓-2.5
4/1 20:00	36.2	↓-2.3
4/1 20:10	34.2	↓-2.0
4/1 20:20	32.3	↓-1.9
4/1 20:30	30.8	↓-1.5
4/1 20:40	29.5	↓-1.3
4/1 20:50	28.5	↓-1.0
4/1 21:00	27.8	↓-0.7
4/1 21:10	27.3	↓-0.5
4/1 21:20	27.2	↓-0.1	干潮
4/1 21:30	27.4	↑0.2
4/1 21:40	27.8	↑0.4
4/1 21:50	28.5	↑0.7
4/1 22:00	29.6	↑1.1
4/1 22:10	30.9	↑1.3
4/1 22:20	32.4	↑1.5
4/1 22:30	34.2	↑1.8
4/1 22:40	36.3	↑2.1
4/1 22:50	38.6	↑2.3
4/1 23:00	41.1	↑2.5
4/1 23:10	43.7	↑2.6
4/1 23:20	46.6	↑2.9
4/1 23:30	49.6	↑3.0
4/1 23:40	52.7	↑3.1
4/1 23:50	56.0	↑3.3