20 (木)	02:21	08:31	14:13	20:25
	146cm	75cm	134cm	54cm
若潮 出 05:03 入 18:19 出 02:28 入 14:08

第一海堡（千葉）2028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	121.5	↑3.2
4/20 00:10	124.5	↑3.0
4/20 00:20	127.4	↑2.9
4/20 00:30	130.1	↑2.7
4/20 00:40	132.7	↑2.6
4/20 00:50	135.0	↑2.3
4/20 01:00	137.2	↑2.2
4/20 01:10	139.1	↑1.9
4/20 01:20	140.7	↑1.6
4/20 01:30	142.2	↑1.5
4/20 01:40	143.4	↑1.2
4/20 01:50	144.3	↑0.9
4/20 02:00	145.0	↑0.7
4/20 02:10	145.4	↑0.4
4/20 02:20	145.5	↑0.1	満潮
4/20 02:30	145.4	↓-0.1
4/20 02:40	145.0	↓-0.4
4/20 02:50	144.3	↓-0.7
4/20 03:00	143.4	↓-0.9
4/20 03:10	142.3	↓-1.1
4/20 03:20	140.9	↓-1.4
4/20 03:30	139.3	↓-1.6
4/20 03:40	137.5	↓-1.8
4/20 03:50	135.5	↓-2.0
4/20 04:00	133.3	↓-2.2
4/20 04:10	130.9	↓-2.4
4/20 04:20	128.4	↓-2.5
4/20 04:30	125.8	↓-2.6
4/20 04:40	123.0	↓-2.8
4/20 04:50	120.2	↓-2.8
4/20 05:00	117.3	↓-2.9
4/20 05:10	114.3	↓-3.0
4/20 05:20	111.3	↓-3.0
4/20 05:30	108.3	↓-3.0
4/20 05:40	105.4	↓-2.9
4/20 05:50	102.4	↓-3.0
4/20 06:00	99.5	↓-2.9
4/20 06:10	96.7	↓-2.8
4/20 06:20	94.0	↓-2.7
4/20 06:30	91.4	↓-2.6
4/20 06:40	89.0	↓-2.4
4/20 06:50	86.7	↓-2.3
4/20 07:00	84.5	↓-2.2
4/20 07:10	82.6	↓-1.9
4/20 07:20	80.9	↓-1.7
4/20 07:30	79.3	↓-1.6
4/20 07:40	78.0	↓-1.3
4/20 07:50	76.9	↓-1.1
4/20 08:00	76.1	↓-0.8
4/20 08:10	75.4	↓-0.7
4/20 08:20	75.1	↓-0.3
4/20 08:30	74.9	↓-0.2	干潮
4/20 08:40	75.1	↑0.2
4/20 08:50	75.4	↑0.3
4/20 09:00	76.0	↑0.6
4/20 09:10	76.9	↑0.9
4/20 09:20	78.0	↑1.1
4/20 09:30	79.2	↑1.2
4/20 09:40	80.7	↑1.5
4/20 09:50	82.4	↑1.7
4/20 10:00	84.3	↑1.9
4/20 10:10	86.3	↑2.0
4/20 10:20	88.5	↑2.2
4/20 10:30	90.8	↑2.3
4/20 10:40	93.2	↑2.4
4/20 10:50	95.7	↑2.5
4/20 11:00	98.3	↑2.6
4/20 11:10	100.9	↑2.6
4/20 11:20	103.6	↑2.7
4/20 11:30	106.3	↑2.7
4/20 11:40	108.9	↑2.6
4/20 11:50	111.5	↑2.6
4/20 12:00	114.1	↑2.6
4/20 12:10	116.6	↑2.5
4/20 12:20	119.0	↑2.4
4/20 12:30	121.2	↑2.2
4/20 12:40	123.3	↑2.1
4/20 12:50	125.3	↑2.0
4/20 13:00	127.1	↑1.8
4/20 13:10	128.6	↑1.5
4/20 13:20	130.0	↑1.4
4/20 13:30	131.2	↑1.2
4/20 13:40	132.1	↑0.9
4/20 13:50	132.8	↑0.7
4/20 14:00	133.2	↑0.4
4/20 14:10	133.4	↑0.2	満潮
4/20 14:20	133.3	↓-0.1
4/20 14:30	133.0	↓-0.3
4/20 14:40	132.4	↓-0.6
4/20 14:50	131.5	↓-0.9
4/20 15:00	130.4	↓-1.1
4/20 15:10	129.0	↓-1.4
4/20 15:20	127.4	↓-1.6
4/20 15:30	125.5	↓-1.9
4/20 15:40	123.4	↓-2.1
4/20 15:50	121.1	↓-2.3
4/20 16:00	118.6	↓-2.5
4/20 16:10	115.9	↓-2.7
4/20 16:20	113.1	↓-2.8
4/20 16:30	110.1	↓-3.0
4/20 16:40	107.0	↓-3.1
4/20 16:50	103.8	↓-3.2
4/20 17:00	100.5	↓-3.3
4/20 17:10	97.1	↓-3.4
4/20 17:20	93.8	↓-3.3
4/20 17:30	90.4	↓-3.4
4/20 17:40	87.0	↓-3.4
4/20 17:50	83.6	↓-3.4
4/20 18:00	80.3	↓-3.3
4/20 18:10	77.2	↓-3.1
4/20 18:20	74.1	↓-3.1
4/20 18:30	71.1	↓-3.0
4/20 18:40	68.3	↓-2.8
4/20 18:50	65.7	↓-2.6
4/20 19:00	63.3	↓-2.4
4/20 19:10	61.1	↓-2.2
4/20 19:20	59.1	↓-2.0
4/20 19:30	57.4	↓-1.7
4/20 19:40	56.0	↓-1.4
4/20 19:50	54.8	↓-1.2
4/20 20:00	53.9	↓-0.9
4/20 20:10	53.3	↓-0.6
4/20 20:20	53.0	↓-0.3	干潮
4/20 20:30	53.1	↑0.1
4/20 20:40	53.4	↑0.3
4/20 20:50	54.0	↑0.6
4/20 21:00	55.0	↑1.0
4/20 21:10	56.3	↑1.3
4/20 21:20	57.8	↑1.5
4/20 21:30	59.7	↑1.9
4/20 21:40	61.8	↑2.1
4/20 21:50	64.2	↑2.4
4/20 22:00	66.9	↑2.7
4/20 22:10	69.7	↑2.8
4/20 22:20	72.9	↑3.2
4/20 22:30	76.2	↑3.3
4/20 22:40	79.7	↑3.5
4/20 22:50	83.3	↑3.6
4/20 23:00	87.1	↑3.8
4/20 23:10	91.0	↑3.9
4/20 23:20	94.9	↑3.9
4/20 23:30	99.0	↑4.1	最大潮位差
4/20 23:40	103.0	↑4.0
4/20 23:50	107.1	↑4.1	最大潮位差