20 (水)	07:23	01:49	21:26	14:24
	153cm	90cm	140cm	28cm
中潮 出 05:04 入 18:19 出 23:12 入 08:50 潮干狩り ○ 12:50～15:59

第一海堡（千葉）2033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	103.5	↓-2.5
4/20 00:10	101.2	↓-2.3
4/20 00:20	99.0	↓-2.2
4/20 00:30	97.0	↓-2.0
4/20 00:40	95.1	↓-1.9
4/20 00:50	93.5	↓-1.6
4/20 01:00	92.2	↓-1.3
4/20 01:10	91.1	↓-1.1
4/20 01:20	90.2	↓-0.9
4/20 01:30	89.6	↓-0.6
4/20 01:40	89.2	↓-0.4	干潮
4/20 01:50	89.1	↓-0.1
4/20 02:00	89.3	↑0.2
4/20 02:10	89.8	↑0.5
4/20 02:20	90.5	↑0.7
4/20 02:30	91.5	↑1.0
4/20 02:40	92.7	↑1.2
4/20 02:50	94.1	↑1.4
4/20 03:00	95.8	↑1.7
4/20 03:10	97.7	↑1.9
4/20 03:20	99.8	↑2.1
4/20 03:30	102.1	↑2.3
4/20 03:40	104.6	↑2.5
4/20 03:50	107.1	↑2.5
4/20 04:00	109.9	↑2.8
4/20 04:10	112.7	↑2.8
4/20 04:20	115.5	↑2.8
4/20 04:30	118.5	↑3.0
4/20 04:40	121.4	↑2.9
4/20 04:50	124.4	↑3.0
4/20 05:00	127.3	↑2.9
4/20 05:10	130.2	↑2.9
4/20 05:20	132.9	↑2.7
4/20 05:30	135.6	↑2.7
4/20 05:40	138.2	↑2.6
4/20 05:50	140.6	↑2.4
4/20 06:00	142.9	↑2.3
4/20 06:10	144.9	↑2.0
4/20 06:20	146.7	↑1.8
4/20 06:30	148.3	↑1.6
4/20 06:40	149.7	↑1.4
4/20 06:50	150.8	↑1.1
4/20 07:00	151.6	↑0.8
4/20 07:10	152.1	↑0.5
4/20 07:20	152.3	↑0.2	満潮
4/20 07:30	152.2	↓-0.1
4/20 07:40	151.8	↓-0.4
4/20 07:50	151.1	↓-0.7
4/20 08:00	150.0	↓-1.1
4/20 08:10	148.6	↓-1.4
4/20 08:20	146.9	↓-1.7
4/20 08:30	145.0	↓-1.9
4/20 08:40	142.7	↓-2.3
4/20 08:50	140.1	↓-2.6
4/20 09:00	137.2	↓-2.9
4/20 09:10	134.1	↓-3.1
4/20 09:20	130.7	↓-3.4
4/20 09:30	127.1	↓-3.6
4/20 09:40	123.2	↓-3.9
4/20 09:50	119.2	↓-4.0
4/20 10:00	115.0	↓-4.2
4/20 10:10	110.6	↓-4.4
4/20 10:20	106.2	↓-4.4
4/20 10:30	101.6	↓-4.6
4/20 10:40	97.0	↓-4.6
4/20 10:50	92.3	↓-4.7	最大潮位差
4/20 11:00	87.6	↓-4.7	最大潮位差
4/20 11:10	82.9	↓-4.7	最大潮位差
4/20 11:20	78.2	↓-4.7	最大潮位差
4/20 11:30	73.6	↓-4.6
4/20 11:40	69.1	↓-4.5
4/20 11:50	64.7	↓-4.4
4/20 12:00	60.5	↓-4.2
4/20 12:10	56.4	↓-4.1
4/20 12:20	52.5	↓-3.9
4/20 12:30	48.9	↓-3.6
4/20 12:40	45.4	↓-3.5
4/20 12:50	42.2	↓-3.2
4/20 13:00	39.3	↓-2.9
4/20 13:10	36.7	↓-2.6
4/20 13:20	34.4	↓-2.3
4/20 13:30	32.4	↓-2.0
4/20 13:40	30.7	↓-1.7
4/20 13:50	29.4	↓-1.3
4/20 14:00	28.4	↓-1.0
4/20 14:10	27.8	↓-0.6
4/20 14:20	27.5	↓-0.3	干潮
4/20 14:30	27.5	0
4/20 14:40	28.0	↑0.5
4/20 14:50	28.7	↑0.7
4/20 15:00	29.8	↑1.1
4/20 15:10	31.2	↑1.4
4/20 15:20	32.9	↑1.7
4/20 15:30	35.0	↑2.1
4/20 15:40	37.3	↑2.3
4/20 15:50	39.9	↑2.6
4/20 16:00	42.8	↑2.9
4/20 16:10	45.9	↑3.1
4/20 16:20	49.2	↑3.3
4/20 16:30	52.7	↑3.5
4/20 16:40	56.4	↑3.7
4/20 16:50	60.2	↑3.8
4/20 17:00	64.2	↑4.0
4/20 17:10	68.3	↑4.1
4/20 17:20	72.4	↑4.1
4/20 17:30	76.6	↑4.2
4/20 17:40	80.9	↑4.3
4/20 17:50	85.1	↑4.2
4/20 18:00	89.3	↑4.2
4/20 18:10	93.5	↑4.2
4/20 18:20	97.6	↑4.1
4/20 18:30	101.6	↑4.0
4/20 18:40	105.4	↑3.8
4/20 18:50	109.2	↑3.8
4/20 19:00	112.8	↑3.6
4/20 19:10	116.2	↑3.4
4/20 19:20	119.4	↑3.2
4/20 19:30	122.5	↑3.1
4/20 19:40	125.3	↑2.8
4/20 19:50	127.9	↑2.6
4/20 20:00	130.2	↑2.3
4/20 20:10	132.3	↑2.1
4/20 20:20	134.1	↑1.8
4/20 20:30	135.7	↑1.6
4/20 20:40	137.0	↑1.3
4/20 20:50	138.0	↑1.0
4/20 21:00	138.8	↑0.8
4/20 21:10	139.3	↑0.5
4/20 21:20	139.5	↑0.2	満潮
4/20 21:30	139.5	0
4/20 21:40	139.3	↓-0.2
4/20 21:50	138.8	↓-0.5
4/20 22:00	138.1	↓-0.7
4/20 22:10	137.2	↓-0.9
4/20 22:20	136.1	↓-1.1
4/20 22:30	134.8	↓-1.3
4/20 22:40	133.4	↓-1.4
4/20 22:50	131.8	↓-1.6
4/20 23:00	130.1	↓-1.7
4/20 23:10	128.3	↓-1.8
4/20 23:20	126.4	↓-1.9
4/20 23:30	124.4	↓-2.0
4/20 23:40	122.4	↓-2.0
4/20 23:50	120.4	↓-2.0