20 (水)	03:16	09:19	15:00	21:16
	155cm	71cm	143cm	40cm
中潮 出 05:04 入 18:19 出 03:45 入 15:17

第一海堡（千葉）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	101.9	↑4.4
4/20 00:10	106.2	↑4.3
4/20 00:20	110.5	↑4.3
4/20 00:30	114.7	↑4.2
4/20 00:40	118.8	↑4.1
4/20 00:50	122.8	↑4.0
4/20 01:00	126.6	↑3.8
4/20 01:10	130.3	↑3.7
4/20 01:20	133.8	↑3.5
4/20 01:30	137.1	↑3.3
4/20 01:40	140.1	↑3.0
4/20 01:50	142.9	↑2.8
4/20 02:00	145.4	↑2.5
4/20 02:10	147.6	↑2.2
4/20 02:20	149.5	↑1.9
4/20 02:30	151.1	↑1.6
4/20 02:40	152.4	↑1.3
4/20 02:50	153.4	↑1.0
4/20 03:00	154.0	↑0.6
4/20 03:10	154.4	↑0.4	満潮
4/20 03:20	154.4	0
4/20 03:30	154.0	↓-0.4
4/20 03:40	153.3	↓-0.7
4/20 03:50	152.4	↓-0.9
4/20 04:00	151.1	↓-1.3
4/20 04:10	149.5	↓-1.6
4/20 04:20	147.6	↓-1.9
4/20 04:30	145.5	↓-2.1
4/20 04:40	143.1	↓-2.4
4/20 04:50	140.5	↓-2.6
4/20 05:00	137.7	↓-2.8
4/20 05:10	134.7	↓-3.0
4/20 05:20	131.5	↓-3.2
4/20 05:30	128.2	↓-3.3
4/20 05:40	124.8	↓-3.4
4/20 05:50	121.2	↓-3.6
4/20 06:00	117.6	↓-3.6
4/20 06:10	114.0	↓-3.6
4/20 06:20	110.4	↓-3.6
4/20 06:30	106.8	↓-3.6
4/20 06:40	103.2	↓-3.6
4/20 06:50	99.7	↓-3.5
4/20 07:00	96.3	↓-3.4
4/20 07:10	93.0	↓-3.3
4/20 07:20	89.8	↓-3.2
4/20 07:30	86.8	↓-3.0
4/20 07:40	84.0	↓-2.8
4/20 07:50	81.5	↓-2.5
4/20 08:00	79.1	↓-2.4
4/20 08:10	77.0	↓-2.1
4/20 08:20	75.1	↓-1.9
4/20 08:30	73.6	↓-1.5
4/20 08:40	72.3	↓-1.3
4/20 08:50	71.3	↓-1.0
4/20 09:00	70.6	↓-0.7
4/20 09:10	70.2	↓-0.4	干潮
4/20 09:20	70.1	↓-0.1
4/20 09:30	70.3	↑0.2
4/20 09:40	70.8	↑0.5
4/20 09:50	71.6	↑0.8
4/20 10:00	72.7	↑1.1
4/20 10:10	74.1	↑1.4
4/20 10:20	75.7	↑1.6
4/20 10:30	77.6	↑1.9
4/20 10:40	79.7	↑2.1
4/20 10:50	82.1	↑2.4
4/20 11:00	84.7	↑2.6
4/20 11:10	87.4	↑2.7
4/20 11:20	90.3	↑2.9
4/20 11:30	93.3	↑3.0
4/20 11:40	96.4	↑3.1
4/20 11:50	99.7	↑3.3
4/20 12:00	102.9	↑3.2
4/20 12:10	106.2	↑3.3
4/20 12:20	109.6	↑3.4
4/20 12:30	112.8	↑3.2
4/20 12:40	116.1	↑3.3
4/20 12:50	119.2	↑3.1
4/20 13:00	122.3	↑3.1
4/20 13:10	125.2	↑2.9
4/20 13:20	127.9	↑2.7
4/20 13:30	130.5	↑2.6
4/20 13:40	132.9	↑2.4
4/20 13:50	135.0	↑2.1
4/20 14:00	136.9	↑1.9
4/20 14:10	138.5	↑1.6
4/20 14:20	139.9	↑1.4
4/20 14:30	140.9	↑1.0
4/20 14:40	141.7	↑0.8
4/20 14:50	142.1	↑0.4	満潮
4/20 15:00	142.2	↑0.1	満潮
4/20 15:10	142.0	↓-0.2
4/20 15:20	141.5	↓-0.5
4/20 15:30	140.6	↓-0.9
4/20 15:40	139.4	↓-1.2
4/20 15:50	137.9	↓-1.5
4/20 16:00	136.1	↓-1.8
4/20 16:10	133.9	↓-2.2
4/20 16:20	131.5	↓-2.4
4/20 16:30	128.8	↓-2.7
4/20 16:40	125.8	↓-3.0
4/20 16:50	122.6	↓-3.2
4/20 17:00	119.2	↓-3.4
4/20 17:10	115.5	↓-3.7
4/20 17:20	111.7	↓-3.8
4/20 17:30	107.7	↓-4.0
4/20 17:40	103.6	↓-4.1
4/20 17:50	99.5	↓-4.1
4/20 18:00	95.2	↓-4.3
4/20 18:10	90.9	↓-4.3
4/20 18:20	86.6	↓-4.3
4/20 18:30	82.4	↓-4.2
4/20 18:40	78.1	↓-4.3
4/20 18:50	74.0	↓-4.1
4/20 19:00	70.0	↓-4.0
4/20 19:10	66.1	↓-3.9
4/20 19:20	62.4	↓-3.7
4/20 19:30	58.9	↓-3.5
4/20 19:40	55.6	↓-3.3
4/20 19:50	52.6	↓-3.0
4/20 20:00	49.8	↓-2.8
4/20 20:10	47.4	↓-2.4
4/20 20:20	45.2	↓-2.2
4/20 20:30	43.4	↓-1.8
4/20 20:40	41.9	↓-1.5
4/20 20:50	40.8	↓-1.1
4/20 21:00	40.1	↓-0.7
4/20 21:10	39.7	↓-0.4	干潮
4/20 21:20	39.7	0
4/20 21:30	40.1	↑0.4
4/20 21:40	40.9	↑0.8
4/20 21:50	42.1	↑1.2
4/20 22:00	43.6	↑1.5
4/20 22:10	45.5	↑1.9
4/20 22:20	47.8	↑2.3
4/20 22:30	50.4	↑2.6
4/20 22:40	53.4	↑3.0
4/20 22:50	56.6	↑3.2
4/20 23:00	60.2	↑3.6
4/20 23:10	64.0	↑3.8
4/20 23:20	68.0	↑4.0
4/20 23:30	72.3	↑4.3
4/20 23:40	76.7	↑4.4
4/20 23:50	81.4	↑4.7	最大潮位差