20 (水)	07:13	00:57	19:27	13:22
	121cm	20cm	121cm	19cm
中潮 出 05:46 入 18:59 出 04:26 入 16:00 潮干狩り ○ 12:02～14:41

大河内湾（長崎）2039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	24.4	↓-1.9
4/20 00:10	22.7	↓-1.7
4/20 00:20	21.4	↓-1.3
4/20 00:30	20.4	↓-1.0
4/20 00:40	19.7	↓-0.7
4/20 00:50	19.3	↓-0.4	干潮
4/20 01:00	19.3	0
4/20 01:10	19.6	↑0.3
4/20 01:20	20.3	↑0.7
4/20 01:30	21.3	↑1.0
4/20 01:40	22.6	↑1.3
4/20 01:50	24.2	↑1.6
4/20 02:00	26.2	↑2.0
4/20 02:10	28.4	↑2.2
4/20 02:20	31.0	↑2.6
4/20 02:30	33.8	↑2.8
4/20 02:40	36.9	↑3.1
4/20 02:50	40.1	↑3.2
4/20 03:00	43.6	↑3.5
4/20 03:10	47.3	↑3.7
4/20 03:20	51.2	↑3.9
4/20 03:30	55.1	↑3.9
4/20 03:40	59.2	↑4.1
4/20 03:50	63.4	↑4.2
4/20 04:00	67.6	↑4.2
4/20 04:10	71.8	↑4.2
4/20 04:20	76.0	↑4.2
4/20 04:30	80.2	↑4.2
4/20 04:40	84.3	↑4.1
4/20 04:50	88.3	↑4.0
4/20 05:00	92.2	↑3.9
4/20 05:10	95.9	↑3.7
4/20 05:20	99.4	↑3.5
4/20 05:30	102.7	↑3.3
4/20 05:40	105.8	↑3.1
4/20 05:50	108.7	↑2.9
4/20 06:00	111.2	↑2.5
4/20 06:10	113.5	↑2.3
4/20 06:20	115.5	↑2.0
4/20 06:30	117.1	↑1.6
4/20 06:40	118.4	↑1.3
4/20 06:50	119.4	↑1.0
4/20 07:00	120.0	↑0.6
4/20 07:10	120.2	↑0.2	満潮
4/20 07:20	120.1	↓-0.1
4/20 07:30	119.6	↓-0.5
4/20 07:40	118.8	↓-0.8
4/20 07:50	117.6	↓-1.2
4/20 08:00	116.0	↓-1.6
4/20 08:10	114.2	↓-1.8
4/20 08:20	112.0	↓-2.2
4/20 08:30	109.5	↓-2.5
4/20 08:40	106.7	↓-2.8
4/20 08:50	103.6	↓-3.1
4/20 09:00	100.3	↓-3.3
4/20 09:10	96.8	↓-3.5
4/20 09:20	93.1	↓-3.7
4/20 09:30	89.2	↓-3.9
4/20 09:40	85.2	↓-4.0
4/20 09:50	81.0	↓-4.2
4/20 10:00	76.8	↓-4.2
4/20 10:10	72.5	↓-4.3
4/20 10:20	68.1	↓-4.4
4/20 10:30	63.8	↓-4.3
4/20 10:40	59.6	↓-4.2
4/20 10:50	55.4	↓-4.2
4/20 11:00	51.2	↓-4.2
4/20 11:10	47.3	↓-3.9
4/20 11:20	43.5	↓-3.8
4/20 11:30	39.8	↓-3.7
4/20 11:40	36.4	↓-3.4
4/20 11:50	33.2	↓-3.2
4/20 12:00	30.3	↓-2.9
4/20 12:10	27.7	↓-2.6
4/20 12:20	25.4	↓-2.3
4/20 12:30	23.3	↓-2.1
4/20 12:40	21.7	↓-1.6
4/20 12:50	20.3	↓-1.4
4/20 13:00	19.4	↓-0.9
4/20 13:10	18.8	↓-0.6
4/20 13:20	18.5	↓-0.3	干潮
4/20 13:30	18.7	↑0.2
4/20 13:40	19.2	↑0.5
4/20 13:50	20.1	↑0.9
4/20 14:00	21.3	↑1.2
4/20 14:10	22.9	↑1.6
4/20 14:20	24.8	↑1.9
4/20 14:30	27.1	↑2.3
4/20 14:40	29.7	↑2.6
4/20 14:50	32.6	↑2.9
4/20 15:00	35.7	↑3.1
4/20 15:10	39.1	↑3.4
4/20 15:20	42.7	↑3.6
4/20 15:30	46.6	↑3.9
4/20 15:40	50.5	↑3.9
4/20 15:50	54.7	↑4.2
4/20 16:00	58.9	↑4.2
4/20 16:10	63.3	↑4.4
4/20 16:20	67.6	↑4.3
4/20 16:30	72.0	↑4.4
4/20 16:40	76.4	↑4.4
4/20 16:50	80.7	↑4.3
4/20 17:00	85.0	↑4.3
4/20 17:10	89.1	↑4.1
4/20 17:20	93.1	↑4.0
4/20 17:30	97.0	↑3.9
4/20 17:40	100.6	↑3.6
4/20 17:50	104.0	↑3.4
4/20 18:00	107.1	↑3.1
4/20 18:10	110.0	↑2.9
4/20 18:20	112.5	↑2.5
4/20 18:30	114.7	↑2.2
4/20 18:40	116.6	↑1.9
4/20 18:50	118.2	↑1.6
4/20 19:00	119.4	↑1.2
4/20 19:10	120.2	↑0.8
4/20 19:20	120.6	↑0.4	満潮
4/20 19:30	120.6	0
4/20 19:40	120.2	↓-0.4
4/20 19:50	119.5	↓-0.7
4/20 20:00	118.4	↓-1.1
4/20 20:10	116.9	↓-1.5
4/20 20:20	115.0	↓-1.9
4/20 20:30	112.8	↓-2.2
4/20 20:40	110.2	↓-2.6
4/20 20:50	107.3	↓-2.9
4/20 21:00	104.1	↓-3.2
4/20 21:10	100.7	↓-3.4
4/20 21:20	97.0	↓-3.7
4/20 21:30	93.0	↓-4.0
4/20 21:40	88.9	↓-4.1
4/20 21:50	84.6	↓-4.3
4/20 22:00	80.1	↓-4.5
4/20 22:10	75.6	↓-4.5
4/20 22:20	70.9	↓-4.7	最大潮位差
4/20 22:30	66.3	↓-4.6
4/20 22:40	61.6	↓-4.7	最大潮位差
4/20 22:50	56.9	↓-4.7	最大潮位差
4/20 23:00	52.4	↓-4.5
4/20 23:10	47.9	↓-4.5
4/20 23:20	43.5	↓-4.4
4/20 23:30	39.3	↓-4.2
4/20 23:40	35.3	↓-4.0
4/20 23:50	31.6	↓-3.7