20 (金)	06:01	00:30	21:25	13:57
	120cm	86cm	98cm	17cm
小潮 出 04:59 入 18:17 出 09:11 入 23:58 潮干狩り ◎ 11:51～16:02

大洗（茨城）2029年04月20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
4/20 00:00	85.5	↓-0.4
4/20 00:10	85.2	↓-0.3
4/20 00:20	85.1	↓-0.1	干潮
4/20 00:30	85.0	↓-0.1	干潮
4/20 00:40	85.1	↑0.1
4/20 00:50	85.3	↑0.2
4/20 01:00	85.6	↑0.3
4/20 01:10	86.1	↑0.5
4/20 01:20	86.6	↑0.5
4/20 01:30	87.3	↑0.7
4/20 01:40	88.1	↑0.8
4/20 01:50	89.1	↑1.0
4/20 02:00	90.1	↑1.0
4/20 02:10	91.2	↑1.1
4/20 02:20	92.5	↑1.3
4/20 02:30	93.8	↑1.3
4/20 02:40	95.3	↑1.5
4/20 02:50	96.8	↑1.5
4/20 03:00	98.3	↑1.5
4/20 03:10	99.9	↑1.6
4/20 03:20	101.6	↑1.7
4/20 03:30	103.3	↑1.7
4/20 03:40	105.0	↑1.7
4/20 03:50	106.6	↑1.6
4/20 04:00	108.3	↑1.7
4/20 04:10	109.9	↑1.6
4/20 04:20	111.4	↑1.5
4/20 04:30	112.9	↑1.5
4/20 04:40	114.2	↑1.3
4/20 04:50	115.5	↑1.3
4/20 05:00	116.6	↑1.1
4/20 05:10	117.6	↑1.0
4/20 05:20	118.4	↑0.8
4/20 05:30	119.1	↑0.7
4/20 05:40	119.6	↑0.5
4/20 05:50	119.9	↑0.3
4/20 06:00	120.0	↑0.1	満潮
4/20 06:10	119.9	↓-0.1
4/20 06:20	119.6	↓-0.3
4/20 06:30	119.1	↓-0.5
4/20 06:40	118.4	↓-0.7
4/20 06:50	117.4	↓-1.0
4/20 07:00	116.3	↓-1.1
4/20 07:10	115.0	↓-1.3
4/20 07:20	113.5	↓-1.5
4/20 07:30	111.7	↓-1.8
4/20 07:40	109.8	↓-1.9
4/20 07:50	107.7	↓-2.1
4/20 08:00	105.4	↓-2.3
4/20 08:10	102.9	↓-2.5
4/20 08:20	100.3	↓-2.6
4/20 08:30	97.6	↓-2.7
4/20 08:40	94.6	↓-3.0
4/20 08:50	91.6	↓-3.0
4/20 09:00	88.5	↓-3.1
4/20 09:10	85.2	↓-3.3
4/20 09:20	81.9	↓-3.3
4/20 09:30	78.5	↓-3.4
4/20 09:40	75.1	↓-3.4
4/20 09:50	71.6	↓-3.5	最大潮位差
4/20 10:00	68.1	↓-3.5	最大潮位差
4/20 10:10	64.7	↓-3.4
4/20 10:20	61.2	↓-3.5	最大潮位差
4/20 10:30	57.8	↓-3.4
4/20 10:40	54.4	↓-3.4
4/20 10:50	51.1	↓-3.3
4/20 11:00	47.9	↓-3.2
4/20 11:10	44.8	↓-3.1
4/20 11:20	41.8	↓-3.0
4/20 11:30	38.9	↓-2.9
4/20 11:40	36.1	↓-2.8
4/20 11:50	33.5	↓-2.6
4/20 12:00	31.1	↓-2.4
4/20 12:10	28.8	↓-2.3
4/20 12:20	26.7	↓-2.1
4/20 12:30	24.8	↓-1.9
4/20 12:40	23.1	↓-1.7
4/20 12:50	21.6	↓-1.5
4/20 13:00	20.3	↓-1.3
4/20 13:10	19.2	↓-1.1
4/20 13:20	18.3	↓-0.9
4/20 13:30	17.6	↓-0.7
4/20 13:40	17.1	↓-0.5
4/20 13:50	16.8	↓-0.3	干潮
4/20 14:00	16.8	0
4/20 14:10	17.0	↑0.2
4/20 14:20	17.4	↑0.4
4/20 14:30	18.1	↑0.7
4/20 14:40	18.9	↑0.8
4/20 14:50	20.0	↑1.1
4/20 15:00	21.3	↑1.3
4/20 15:10	22.8	↑1.5
4/20 15:20	24.5	↑1.7
4/20 15:30	26.4	↑1.9
4/20 15:40	28.5	↑2.1
4/20 15:50	30.7	↑2.2
4/20 16:00	33.1	↑2.4
4/20 16:10	35.6	↑2.5
4/20 16:20	38.2	↑2.6
4/20 16:30	41.0	↑2.8
4/20 16:40	43.8	↑2.8
4/20 16:50	46.7	↑2.9
4/20 17:00	49.6	↑2.9
4/20 17:10	52.5	↑2.9
4/20 17:20	55.5	↑3.0
4/20 17:30	58.4	↑2.9
4/20 17:40	61.3	↑2.9
4/20 17:50	64.2	↑2.9
4/20 18:00	67.0	↑2.8
4/20 18:10	69.7	↑2.7
4/20 18:20	72.4	↑2.7
4/20 18:30	74.9	↑2.5
4/20 18:40	77.4	↑2.5
4/20 18:50	79.7	↑2.3
4/20 19:00	81.9	↑2.2
4/20 19:10	84.0	↑2.1
4/20 19:20	85.9	↑1.9
4/20 19:30	87.7	↑1.8
4/20 19:40	89.3	↑1.6
4/20 19:50	90.8	↑1.5
4/20 20:00	92.1	↑1.3
4/20 20:10	93.2	↑1.1
4/20 20:20	94.2	↑1.0
4/20 20:30	95.1	↑0.9
4/20 20:40	95.7	↑0.6
4/20 20:50	96.3	↑0.6
4/20 21:00	96.7	↑0.4
4/20 21:10	96.9	↑0.2
4/20 21:20	97.0	↑0.1	満潮
4/20 21:30	97.0	0
4/20 21:40	96.9	↓-0.1
4/20 21:50	96.7	↓-0.2
4/20 22:00	96.4	↓-0.3
4/20 22:10	96.0	↓-0.4
4/20 22:20	95.5	↓-0.5
4/20 22:30	95.0	↓-0.5
4/20 22:40	94.4	↓-0.6
4/20 22:50	93.9	↓-0.5
4/20 23:00	93.3	↓-0.6
4/20 23:10	92.7	↓-0.6
4/20 23:20	92.1	↓-0.6
4/20 23:30	91.5	↓-0.6
4/20 23:40	91.0	↓-0.5
4/20 23:50	90.4	↓-0.6