20 (土)	04:29	11:29	18:27	23:36
	128cm	-17cm	115cm	64cm
中潮 出 04:59 入 18:15 出 20:59 入 06:07 潮干狩り ◎ 08:44～14:17

銚子漁港（千葉）2030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	61.5	↑1.7
4/20 00:10	63.5	↑2.0
4/20 00:20	65.7	↑2.2
4/20 00:30	68.2	↑2.5
4/20 00:40	70.9	↑2.7
4/20 00:50	73.7	↑2.8
4/20 01:00	76.7	↑3.0
4/20 01:10	79.9	↑3.2
4/20 01:20	83.1	↑3.2
4/20 01:30	86.4	↑3.3
4/20 01:40	89.8	↑3.4
4/20 01:50	93.1	↑3.3
4/20 02:00	96.5	↑3.4
4/20 02:10	99.8	↑3.3
4/20 02:20	103.1	↑3.3
4/20 02:30	106.2	↑3.1
4/20 02:40	109.3	↑3.1
4/20 02:50	112.2	↑2.9
4/20 03:00	114.9	↑2.7
4/20 03:10	117.4	↑2.5
4/20 03:20	119.7	↑2.3
4/20 03:30	121.8	↑2.1
4/20 03:40	123.6	↑1.8
4/20 03:50	125.1	↑1.5
4/20 04:00	126.2	↑1.1
4/20 04:10	127.1	↑0.9
4/20 04:20	127.6	↑0.5	満潮
4/20 04:30	127.7	↑0.1
4/20 04:40	127.5	↓-0.2
4/20 04:50	126.8	↓-0.7
4/20 05:00	125.8	↓-1.0
4/20 05:10	124.4	↓-1.4
4/20 05:20	122.5	↓-1.9
4/20 05:30	120.3	↓-2.2
4/20 05:40	117.7	↓-2.6
4/20 05:50	114.8	↓-2.9
4/20 06:00	111.5	↓-3.3
4/20 06:10	107.8	↓-3.7
4/20 06:20	103.9	↓-3.9
4/20 06:30	99.6	↓-4.3
4/20 06:40	95.1	↓-4.5
4/20 06:50	90.4	↓-4.7
4/20 07:00	85.5	↓-4.9
4/20 07:10	80.4	↓-5.1
4/20 07:20	75.2	↓-5.2
4/20 07:30	69.8	↓-5.4
4/20 07:40	64.5	↓-5.3
4/20 07:50	59.0	↓-5.5	最大潮位差
4/20 08:00	53.6	↓-5.4
4/20 08:10	48.1	↓-5.5	最大潮位差
4/20 08:20	42.8	↓-5.3
4/20 08:30	37.5	↓-5.3
4/20 08:40	32.3	↓-5.2
4/20 08:50	27.2	↓-5.1
4/20 09:00	22.3	↓-4.9
4/20 09:10	17.5	↓-4.8
4/20 09:20	13.0	↓-4.5
4/20 09:30	8.7	↓-4.3
4/20 09:40	4.6	↓-4.1
4/20 09:50	0.8	↓-3.8
4/20 10:00	-2.7	↓-3.5
4/20 10:10	-5.8	↓-3.1
4/20 10:20	-8.7	↓-2.9
4/20 10:30	-11.2	↓-2.5
4/20 10:40	-13.3	↓-2.1
4/20 10:50	-15.0	↓-1.7
4/20 11:00	-16.4	↓-1.4
4/20 11:10	-17.3	↓-0.9
4/20 11:20	-17.9	↓-0.6	干潮
4/20 11:30	-18.0	↓-0.1
4/20 11:40	-17.7	↑0.3
4/20 11:50	-17.0	↑0.7
4/20 12:00	-15.9	↑1.1
4/20 12:10	-14.3	↑1.6
4/20 12:20	-12.5	↑1.8
4/20 12:30	-10.2	↑2.3
4/20 12:40	-7.6	↑2.6
4/20 12:50	-4.6	↑3.0
4/20 13:00	-1.4	↑3.2
4/20 13:10	2.1	↑3.5
4/20 13:20	5.9	↑3.8
4/20 13:30	9.9	↑4.0
4/20 13:40	14.1	↑4.2
4/20 13:50	18.5	↑4.4
4/20 14:00	23.1	↑4.6
4/20 14:10	27.8	↑4.7
4/20 14:20	32.6	↑4.8
4/20 14:30	37.4	↑4.8
4/20 14:40	42.4	↑5.0
4/20 14:50	47.3	↑4.9
4/20 15:00	52.2	↑4.9
4/20 15:10	57.1	↑4.9
4/20 15:20	62.0	↑4.9
4/20 15:30	66.8	↑4.8
4/20 15:40	71.5	↑4.7
4/20 15:50	76.0	↑4.5
4/20 16:00	80.4	↑4.4
4/20 16:10	84.6	↑4.2
4/20 16:20	88.7	↑4.1
4/20 16:30	92.4	↑3.7
4/20 16:40	96.0	↑3.6
4/20 16:50	99.3	↑3.3
4/20 17:00	102.2	↑2.9
4/20 17:10	104.9	↑2.7
4/20 17:20	107.3	↑2.4
4/20 17:30	109.3	↑2.0
4/20 17:40	111.0	↑1.7
4/20 17:50	112.4	↑1.4
4/20 18:00	113.4	↑1.0
4/20 18:10	114.1	↑0.7
4/20 18:20	114.5	↑0.4	満潮
4/20 18:30	114.5	0
4/20 18:40	114.2	↓-0.3
4/20 18:50	113.7	↓-0.5
4/20 19:00	112.9	↓-0.8
4/20 19:10	111.8	↓-1.1
4/20 19:20	110.5	↓-1.3
4/20 19:30	108.9	↓-1.6
4/20 19:40	107.2	↓-1.7
4/20 19:50	105.3	↓-1.9
4/20 20:00	103.3	↓-2.0
4/20 20:10	101.1	↓-2.2
4/20 20:20	98.8	↓-2.3
4/20 20:30	96.4	↓-2.4
4/20 20:40	94.0	↓-2.4
4/20 20:50	91.6	↓-2.4
4/20 21:00	89.1	↓-2.5
4/20 21:10	86.6	↓-2.5
4/20 21:20	84.2	↓-2.4
4/20 21:30	81.8	↓-2.4
4/20 21:40	79.4	↓-2.4
4/20 21:50	77.2	↓-2.2
4/20 22:00	75.0	↓-2.2
4/20 22:10	73.0	↓-2.0
4/20 22:20	71.2	↓-1.8
4/20 22:30	69.5	↓-1.7
4/20 22:40	68.0	↓-1.5
4/20 22:50	66.7	↓-1.3
4/20 23:00	65.6	↓-1.1
4/20 23:10	64.8	↓-0.8
4/20 23:20	64.2	↓-0.6
4/20 23:30	64.0	↓-0.2	干潮
4/20 23:40	63.9	↓-0.1
4/20 23:50	64.2	↑0.3