18 (日)	07:18	01:09	19:50	13:40
	168cm	41cm	149cm	33cm
中潮 出 06:25 入 17:28 出 08:19 入 21:58 潮干狩り ○ 12:32～14:47

第一海堡（千葉）2029年02月18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
2/18 00:00	50.7	↓-3.1
2/18 00:10	48.1	↓-2.6
2/18 00:20	45.8	↓-2.3
2/18 00:30	43.9	↓-1.9
2/18 00:40	42.4	↓-1.5
2/18 00:50	41.4	↓-1.0
2/18 01:00	40.9	↓-0.5	干潮
2/18 01:10	40.8	↓-0.1
2/18 01:20	41.1	↑0.3
2/18 01:30	41.9	↑0.8
2/18 01:40	43.1	↑1.2
2/18 01:50	44.8	↑1.7
2/18 02:00	46.9	↑2.1
2/18 02:10	49.4	↑2.5
2/18 02:20	52.3	↑2.9
2/18 02:30	55.5	↑3.2
2/18 02:40	59.1	↑3.6
2/18 02:50	63.1	↑4.0
2/18 03:00	67.3	↑4.2
2/18 03:10	71.8	↑4.5
2/18 03:20	76.6	↑4.8
2/18 03:30	81.5	↑4.9
2/18 03:40	86.6	↑5.1
2/18 03:50	91.8	↑5.2
2/18 04:00	97.1	↑5.3
2/18 04:10	102.4	↑5.3
2/18 04:20	107.8	↑5.4
2/18 04:30	113.2	↑5.4
2/18 04:40	118.4	↑5.2
2/18 04:50	123.6	↑5.2
2/18 05:00	128.6	↑5.0
2/18 05:10	133.5	↑4.9
2/18 05:20	138.1	↑4.6
2/18 05:30	142.5	↑4.4
2/18 05:40	146.6	↑4.1
2/18 05:50	150.4	↑3.8
2/18 06:00	153.9	↑3.5
2/18 06:10	157.0	↑3.1
2/18 06:20	159.7	↑2.7
2/18 06:30	162.0	↑2.3
2/18 06:40	163.9	↑1.9
2/18 06:50	165.3	↑1.4
2/18 07:00	166.4	↑1.1
2/18 07:10	166.9	↑0.5	満潮
2/18 07:20	167.0	↑0.1
2/18 07:30	166.7	↓-0.3
2/18 07:40	165.8	↓-0.9
2/18 07:50	164.6	↓-1.2
2/18 08:00	162.9	↓-1.7
2/18 08:10	160.7	↓-2.2
2/18 08:20	158.2	↓-2.5
2/18 08:30	155.2	↓-3.0
2/18 08:40	151.8	↓-3.4
2/18 08:50	148.1	↓-3.7
2/18 09:00	144.1	↓-4.0
2/18 09:10	139.8	↓-4.3
2/18 09:20	135.2	↓-4.6
2/18 09:30	130.3	↓-4.9
2/18 09:40	125.3	↓-5.0
2/18 09:50	120.1	↓-5.2
2/18 10:00	114.7	↓-5.4
2/18 10:10	109.2	↓-5.5
2/18 10:20	103.7	↓-5.5
2/18 10:30	98.2	↓-5.5
2/18 10:40	92.6	↓-5.6	最大潮位差
2/18 10:50	87.2	↓-5.4
2/18 11:00	81.8	↓-5.4
2/18 11:10	76.5	↓-5.3
2/18 11:20	71.4	↓-5.1
2/18 11:30	66.5	↓-4.9
2/18 11:40	61.8	↓-4.7
2/18 11:50	57.4	↓-4.4
2/18 12:00	53.3	↓-4.1
2/18 12:10	49.5	↓-3.8
2/18 12:20	46.0	↓-3.5
2/18 12:30	42.9	↓-3.1
2/18 12:40	40.2	↓-2.7
2/18 12:50	37.9	↓-2.3
2/18 13:00	36.0	↓-1.9
2/18 13:10	34.5	↓-1.5
2/18 13:20	33.4	↓-1.1
2/18 13:30	32.8	↓-0.6	干潮
2/18 13:40	32.7	↓-0.1	干潮
2/18 13:50	33.0	↑0.3
2/18 14:00	33.7	↑0.7
2/18 14:10	34.8	↑1.1
2/18 14:20	36.4	↑1.6
2/18 14:30	38.3	↑1.9
2/18 14:40	40.7	↑2.4
2/18 14:50	43.4	↑2.7
2/18 15:00	46.5	↑3.1
2/18 15:10	49.9	↑3.4
2/18 15:20	53.5	↑3.6
2/18 15:30	57.5	↑4.0
2/18 15:40	61.7	↑4.2
2/18 15:50	66.1	↑4.4
2/18 16:00	70.6	↑4.5
2/18 16:10	75.4	↑4.8
2/18 16:20	80.2	↑4.8
2/18 16:30	85.1	↑4.9
2/18 16:40	90.0	↑4.9
2/18 16:50	94.9	↑4.9
2/18 17:00	99.8	↑4.9
2/18 17:10	104.6	↑4.8
2/18 17:20	109.3	↑4.7
2/18 17:30	113.8	↑4.5
2/18 17:40	118.2	↑4.4
2/18 17:50	122.4	↑4.2
2/18 18:00	126.4	↑4.0
2/18 18:10	130.1	↑3.7
2/18 18:20	133.5	↑3.4
2/18 18:30	136.6	↑3.1
2/18 18:40	139.4	↑2.8
2/18 18:50	141.8	↑2.4
2/18 19:00	143.9	↑2.1
2/18 19:10	145.6	↑1.7
2/18 19:20	146.9	↑1.3
2/18 19:30	147.9	↑1.0
2/18 19:40	148.4	↑0.5	満潮
2/18 19:50	148.5	↑0.1	満潮
2/18 20:00	148.3	↓-0.2
2/18 20:10	147.7	↓-0.6
2/18 20:20	146.7	↓-1.0
2/18 20:30	145.3	↓-1.4
2/18 20:40	143.5	↓-1.8
2/18 20:50	141.5	↓-2.0
2/18 21:00	139.1	↓-2.4
2/18 21:10	136.4	↓-2.7
2/18 21:20	133.4	↓-3.0
2/18 21:30	130.2	↓-3.2
2/18 21:40	126.7	↓-3.5
2/18 21:50	123.1	↓-3.6
2/18 22:00	119.3	↓-3.8
2/18 22:10	115.3	↓-4.0
2/18 22:20	111.3	↓-4.0
2/18 22:30	107.2	↓-4.1
2/18 22:40	103.1	↓-4.1
2/18 22:50	98.9	↓-4.2
2/18 23:00	94.8	↓-4.1
2/18 23:10	90.7	↓-4.1
2/18 23:20	86.8	↓-3.9
2/18 23:30	82.9	↓-3.9
2/18 23:40	79.3	↓-3.6
2/18 23:50	75.8	↓-3.5