20 (金)	07:33	02:12	22:41	15:04
	146cm	106cm	132cm	34cm
小潮 出 05:04 入 18:19 出 09:17 入 00:00 潮干狩り ○ 13:44～16:25

第一海堡（千葉）2029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	118.0	↓-1.7
4/20 00:10	116.3	↓-1.7
4/20 00:20	114.7	↓-1.6
4/20 00:30	113.2	↓-1.5
4/20 00:40	111.8	↓-1.4
4/20 00:50	110.5	↓-1.3
4/20 01:00	109.3	↓-1.2
4/20 01:10	108.2	↓-1.1
4/20 01:20	107.3	↓-0.9
4/20 01:30	106.5	↓-0.8
4/20 01:40	105.9	↓-0.6
4/20 01:50	105.4	↓-0.5
4/20 02:00	105.1	↓-0.3
4/20 02:10	105.0	↓-0.1	干潮
4/20 02:20	105.1	↑0.1
4/20 02:30	105.4	↑0.3
4/20 02:40	105.8	↑0.4
4/20 02:50	106.4	↑0.6
4/20 03:00	107.2	↑0.8
4/20 03:10	108.1	↑0.9
4/20 03:20	109.2	↑1.1
4/20 03:30	110.5	↑1.3
4/20 03:40	111.8	↑1.3
4/20 03:50	113.3	↑1.5
4/20 04:00	115.0	↑1.7
4/20 04:10	116.7	↑1.7
4/20 04:20	118.5	↑1.8
4/20 04:30	120.3	↑1.8
4/20 04:40	122.3	↑2.0
4/20 04:50	124.2	↑1.9
4/20 05:00	126.2	↑2.0
4/20 05:10	128.1	↑1.9
4/20 05:20	130.1	↑2.0
4/20 05:30	132.0	↑1.9
4/20 05:40	133.8	↑1.8
4/20 05:50	135.6	↑1.8
4/20 06:00	137.3	↑1.7
4/20 06:10	138.9	↑1.6
4/20 06:20	140.3	↑1.4
4/20 06:30	141.6	↑1.3
4/20 06:40	142.8	↑1.2
4/20 06:50	143.7	↑0.9
4/20 07:00	144.5	↑0.8
4/20 07:10	145.1	↑0.6
4/20 07:20	145.5	↑0.4
4/20 07:30	145.6	↑0.1	満潮
4/20 07:40	145.6	0
4/20 07:50	145.3	↓-0.3
4/20 08:00	144.7	↓-0.6
4/20 08:10	144.0	↓-0.7
4/20 08:20	143.0	↓-1.0
4/20 08:30	141.7	↓-1.3
4/20 08:40	140.2	↓-1.5
4/20 08:50	138.5	↓-1.7
4/20 09:00	136.5	↓-2.0
4/20 09:10	134.3	↓-2.2
4/20 09:20	131.9	↓-2.4
4/20 09:30	129.3	↓-2.6
4/20 09:40	126.4	↓-2.9
4/20 09:50	123.4	↓-3.0
4/20 10:00	120.2	↓-3.2
4/20 10:10	116.9	↓-3.3
4/20 10:20	113.4	↓-3.5
4/20 10:30	109.8	↓-3.6
4/20 10:40	106.1	↓-3.7
4/20 10:50	102.3	↓-3.8
4/20 11:00	98.4	↓-3.9
4/20 11:10	94.5	↓-3.9
4/20 11:20	90.5	↓-4.0	最大潮位差
4/20 11:30	86.5	↓-4.0	最大潮位差
4/20 11:40	82.6	↓-3.9
4/20 11:50	78.7	↓-3.9
4/20 12:00	74.8	↓-3.9
4/20 12:10	71.0	↓-3.8
4/20 12:20	67.3	↓-3.7
4/20 12:30	63.7	↓-3.6
4/20 12:40	60.2	↓-3.5
4/20 12:50	56.9	↓-3.3
4/20 13:00	53.8	↓-3.1
4/20 13:10	50.8	↓-3.0
4/20 13:20	48.0	↓-2.8
4/20 13:30	45.5	↓-2.5
4/20 13:40	43.2	↓-2.3
4/20 13:50	41.1	↓-2.1
4/20 14:00	39.2	↓-1.9
4/20 14:10	37.6	↓-1.6
4/20 14:20	36.3	↓-1.3
4/20 14:30	35.3	↓-1.0
4/20 14:40	34.5	↓-0.8
4/20 14:50	34.0	↓-0.5
4/20 15:00	33.8	↓-0.2	干潮
4/20 15:10	33.8	0
4/20 15:20	34.2	↑0.4
4/20 15:30	34.8	↑0.6
4/20 15:40	35.6	↑0.8
4/20 15:50	36.7	↑1.1
4/20 16:00	38.1	↑1.4
4/20 16:10	39.7	↑1.6
4/20 16:20	41.6	↑1.9
4/20 16:30	43.7	↑2.1
4/20 16:40	45.9	↑2.2
4/20 16:50	48.4	↑2.5
4/20 17:00	51.0	↑2.6
4/20 17:10	53.8	↑2.8
4/20 17:20	56.8	↑3.0
4/20 17:30	59.9	↑3.1
4/20 17:40	63.1	↑3.2
4/20 17:50	66.3	↑3.2
4/20 18:00	69.7	↑3.4
4/20 18:10	73.1	↑3.4
4/20 18:20	76.6	↑3.5
4/20 18:30	80.0	↑3.4
4/20 18:40	83.5	↑3.5
4/20 18:50	86.9	↑3.4
4/20 19:00	90.3	↑3.4
4/20 19:10	93.7	↑3.4
4/20 19:20	97.0	↑3.3
4/20 19:30	100.2	↑3.2
4/20 19:40	103.3	↑3.1
4/20 19:50	106.3	↑3.0
4/20 20:00	109.1	↑2.8
4/20 20:10	111.9	↑2.8
4/20 20:20	114.4	↑2.5
4/20 20:30	116.9	↑2.5
4/20 20:40	119.1	↑2.2
4/20 20:50	121.2	↑2.1
4/20 21:00	123.1	↑1.9
4/20 21:10	124.8	↑1.7
4/20 21:20	126.3	↑1.5
4/20 21:30	127.7	↑1.4
4/20 21:40	128.8	↑1.1
4/20 21:50	129.8	↑1.0
4/20 22:00	130.6	↑0.8
4/20 22:10	131.2	↑0.6
4/20 22:20	131.6	↑0.4
4/20 22:30	131.9	↑0.3
4/20 22:40	131.9	0	満潮
4/20 22:50	131.9	0
4/20 23:00	131.6	↓-0.3
4/20 23:10	131.3	↓-0.3
4/20 23:20	130.8	↓-0.5
4/20 23:30	130.1	↓-0.7
4/20 23:40	129.4	↓-0.7
4/20 23:50	128.6	↓-0.8