20 (土)	04:35	11:33	18:35	23:25
	139cm	2cm	114cm	84cm
中潮 出 04:46 入 18:22 出 22:43 入 06:38 潮干狩り ◎ 09:23～14:04

苫小牧（北海道）2041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	80.4	↑1.5
4/20 00:10	82.1	↑1.7
4/20 00:20	83.9	↑1.8
4/20 00:30	85.9	↑2.0
4/20 00:40	88.0	↑2.1
4/20 00:50	90.1	↑2.1
4/20 01:00	92.4	↑2.3
4/20 01:10	94.7	↑2.3
4/20 01:20	97.1	↑2.4
4/20 01:30	99.6	↑2.5
4/20 01:40	102.1	↑2.5
4/20 01:50	104.7	↑2.6
4/20 02:00	107.4	↑2.7
4/20 02:10	110.1	↑2.7
4/20 02:20	112.8	↑2.7
4/20 02:30	115.6	↑2.8
4/20 02:40	118.3	↑2.7
4/20 02:50	121.0	↑2.7
4/20 03:00	123.7	↑2.7
4/20 03:10	126.2	↑2.5
4/20 03:20	128.6	↑2.4
4/20 03:30	130.9	↑2.3
4/20 03:40	132.9	↑2.0
4/20 03:50	134.6	↑1.7
4/20 04:00	136.1	↑1.5
4/20 04:10	137.2	↑1.1
4/20 04:20	138.0	↑0.8
4/20 04:30	138.4	↑0.4	満潮
4/20 04:40	138.3	↓-0.1
4/20 04:50	137.8	↓-0.5
4/20 05:00	136.9	↓-0.9
4/20 05:10	135.6	↓-1.3
4/20 05:20	133.9	↓-1.7
4/20 05:30	131.7	↓-2.2
4/20 05:40	129.2	↓-2.5
4/20 05:50	126.4	↓-2.8
4/20 06:00	123.3	↓-3.1
4/20 06:10	119.9	↓-3.4
4/20 06:20	116.2	↓-3.7
4/20 06:30	112.3	↓-3.9
4/20 06:40	108.3	↓-4.0
4/20 06:50	104.1	↓-4.2
4/20 07:00	99.8	↓-4.3
4/20 07:10	95.4	↓-4.4
4/20 07:20	90.9	↓-4.5
4/20 07:30	86.4	↓-4.5
4/20 07:40	81.7	↓-4.7
4/20 07:50	77.1	↓-4.6
4/20 08:00	72.4	↓-4.7
4/20 08:10	67.6	↓-4.8	最大潮位差
4/20 08:20	62.9	↓-4.7
4/20 08:30	58.1	↓-4.8	最大潮位差
4/20 08:40	53.3	↓-4.8	最大潮位差
4/20 08:50	48.6	↓-4.7
4/20 09:00	43.9	↓-4.7
4/20 09:10	39.3	↓-4.6
4/20 09:20	34.8	↓-4.5
4/20 09:30	30.5	↓-4.3
4/20 09:40	26.3	↓-4.2
4/20 09:50	22.4	↓-3.9
4/20 10:00	18.7	↓-3.7
4/20 10:10	15.3	↓-3.4
4/20 10:20	12.2	↓-3.1
4/20 10:30	9.5	↓-2.7
4/20 10:40	7.1	↓-2.4
4/20 10:50	5.2	↓-1.9
4/20 11:00	3.7	↓-1.5
4/20 11:10	2.6	↓-1.1
4/20 11:20	1.9	↓-0.7
4/20 11:30	1.6	↓-0.3	干潮
4/20 11:40	1.7	↑0.1
4/20 11:50	2.2	↑0.5
4/20 12:00	3.0	↑0.8
4/20 12:10	4.2	↑1.2
4/20 12:20	5.7	↑1.5
4/20 12:30	7.4	↑1.7
4/20 12:40	9.4	↑2.0
4/20 12:50	11.7	↑2.3
4/20 13:00	14.1	↑2.4
4/20 13:10	16.7	↑2.6
4/20 13:20	19.6	↑2.9
4/20 13:30	22.5	↑2.9
4/20 13:40	25.7	↑3.2
4/20 13:50	29.0	↑3.3
4/20 14:00	32.5	↑3.5
4/20 14:10	36.1	↑3.6
4/20 14:20	39.9	↑3.8
4/20 14:30	43.8	↑3.9
4/20 14:40	47.8	↑4.0
4/20 14:50	51.9	↑4.1
4/20 15:00	56.2	↑4.3
4/20 15:10	60.5	↑4.3
4/20 15:20	64.8	↑4.3
4/20 15:30	69.2	↑4.4
4/20 15:40	73.5	↑4.3
4/20 15:50	77.7	↑4.2
4/20 16:00	81.9	↑4.2
4/20 16:10	85.9	↑4.0
4/20 16:20	89.7	↑3.8
4/20 16:30	93.3	↑3.6
4/20 16:40	96.7	↑3.4
4/20 16:50	99.8	↑3.1
4/20 17:00	102.5	↑2.7
4/20 17:10	105.0	↑2.5
4/20 17:20	107.1	↑2.1
4/20 17:30	109.0	↑1.9
4/20 17:40	110.4	↑1.4
4/20 17:50	111.6	↑1.2
4/20 18:00	112.5	↑0.9
4/20 18:10	113.2	↑0.7
4/20 18:20	113.6	↑0.4
4/20 18:30	113.8	↑0.2	満潮
4/20 18:40	113.8	0
4/20 18:50	113.6	↓-0.2
4/20 19:00	113.3	↓-0.3
4/20 19:10	112.8	↓-0.5
4/20 19:20	112.2	↓-0.6
4/20 19:30	111.6	↓-0.6
4/20 19:40	110.8	↓-0.8
4/20 19:50	109.9	↓-0.9
4/20 20:00	109.0	↓-0.9
4/20 20:10	107.9	↓-1.1
4/20 20:20	106.8	↓-1.1
4/20 20:30	105.6	↓-1.2
4/20 20:40	104.3	↓-1.3
4/20 20:50	102.9	↓-1.4
4/20 21:00	101.4	↓-1.5
4/20 21:10	99.8	↓-1.6
4/20 21:20	98.2	↓-1.6
4/20 21:30	96.5	↓-1.7
4/20 21:40	94.9	↓-1.6
4/20 21:50	93.2	↓-1.7
4/20 22:00	91.6	↓-1.6
4/20 22:10	90.0	↓-1.6
4/20 22:20	88.6	↓-1.4
4/20 22:30	87.3	↓-1.3
4/20 22:40	86.2	↓-1.1
4/20 22:50	85.2	↓-1.0
4/20 23:00	84.5	↓-0.7
4/20 23:10	84.0	↓-0.5
4/20 23:20	83.8	↓-0.2	干潮
4/20 23:30	83.8	0
4/20 23:40	84.1	↑0.3
4/20 23:50	84.6	↑0.5