20 (火)	03:44	10:39	17:34	22:38
	141cm	-1cm	122cm	75cm
中潮 出 04:45 入 18:22 出 21:07 入 05:45 潮干狩り ◎ 08:28～13:12

苫小牧（北海道）2049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	84.6	↑2.3
4/20 00:10	87.1	↑2.5
4/20 00:20	89.7	↑2.6
4/20 00:30	92.4	↑2.7
4/20 00:40	95.2	↑2.8
4/20 00:50	98.1	↑2.9
4/20 01:00	101.2	↑3.1
4/20 01:10	104.4	↑3.2
4/20 01:20	107.6	↑3.2
4/20 01:30	110.9	↑3.3
4/20 01:40	114.2	↑3.3
4/20 01:50	117.5	↑3.3
4/20 02:00	120.8	↑3.3
4/20 02:10	123.9	↑3.1
4/20 02:20	127.0	↑3.1
4/20 02:30	129.8	↑2.8
4/20 02:40	132.5	↑2.7
4/20 02:50	134.8	↑2.3
4/20 03:00	136.8	↑2.0
4/20 03:10	138.4	↑1.6
4/20 03:20	139.7	↑1.3
4/20 03:30	140.5	↑0.8
4/20 03:40	140.8	↑0.3	満潮
4/20 03:50	140.7	↓-0.1
4/20 04:00	140.2	↓-0.5
4/20 04:10	139.2	↓-1.0
4/20 04:20	137.8	↓-1.4
4/20 04:30	136.0	↓-1.8
4/20 04:40	133.8	↓-2.2
4/20 04:50	131.2	↓-2.6
4/20 05:00	128.4	↓-2.8
4/20 05:10	125.2	↓-3.2
4/20 05:20	121.8	↓-3.4
4/20 05:30	118.2	↓-3.6
4/20 05:40	114.4	↓-3.8
4/20 05:50	110.3	↓-4.1
4/20 06:00	106.2	↓-4.1
4/20 06:10	101.9	↓-4.3
4/20 06:20	97.4	↓-4.5
4/20 06:30	92.9	↓-4.5
4/20 06:40	88.2	↓-4.7
4/20 06:50	83.4	↓-4.8
4/20 07:00	78.5	↓-4.9
4/20 07:10	73.5	↓-5.0
4/20 07:20	68.4	↓-5.1
4/20 07:30	63.2	↓-5.2	最大潮位差
4/20 07:40	58.0	↓-5.2	最大潮位差
4/20 07:50	52.8	↓-5.2	最大潮位差
4/20 08:00	47.6	↓-5.2	最大潮位差
4/20 08:10	42.4	↓-5.2	最大潮位差
4/20 08:20	37.3	↓-5.1
4/20 08:30	32.4	↓-4.9
4/20 08:40	27.6	↓-4.8
4/20 08:50	23.1	↓-4.5
4/20 09:00	18.9	↓-4.2
4/20 09:10	14.9	↓-4.0
4/20 09:20	11.4	↓-3.5
4/20 09:30	8.2	↓-3.2
4/20 09:40	5.4	↓-2.8
4/20 09:50	3.1	↓-2.3
4/20 10:00	1.2	↓-1.9
4/20 10:10	-0.2	↓-1.4
4/20 10:20	-1.2	↓-1.0
4/20 10:30	-1.7	↓-0.5	干潮
4/20 10:40	-1.9	↓-0.2
4/20 10:50	-1.6	↑0.3
4/20 11:00	-0.9	↑0.7
4/20 11:10	0.1	↑1.0
4/20 11:20	1.4	↑1.3
4/20 11:30	3.1	↑1.7
4/20 11:40	5.0	↑1.9
4/20 11:50	7.2	↑2.2
4/20 12:00	9.6	↑2.4
4/20 12:10	12.3	↑2.7
4/20 12:20	15.2	↑2.9
4/20 12:30	18.3	↑3.1
4/20 12:40	21.7	↑3.4
4/20 12:50	25.2	↑3.5
4/20 13:00	29.0	↑3.8
4/20 13:10	33.0	↑4.0
4/20 13:20	37.3	↑4.3
4/20 13:30	41.7	↑4.4
4/20 13:40	46.2	↑4.5
4/20 13:50	51.0	↑4.8
4/20 14:00	55.9	↑4.9
4/20 14:10	60.8	↑4.9
4/20 14:20	65.9	↑5.1
4/20 14:30	70.9	↑5.0
4/20 14:40	76.0	↑5.1
4/20 14:50	80.9	↑4.9
4/20 15:00	85.7	↑4.8
4/20 15:10	90.3	↑4.6
4/20 15:20	94.7	↑4.4
4/20 15:30	98.9	↑4.2
4/20 15:40	102.7	↑3.8
4/20 15:50	106.2	↑3.5
4/20 16:00	109.4	↑3.2
4/20 16:10	112.1	↑2.7
4/20 16:20	114.5	↑2.4
4/20 16:30	116.6	↑2.1
4/20 16:40	118.2	↑1.6
4/20 16:50	119.6	↑1.4
4/20 17:00	120.6	↑1.0
4/20 17:10	121.3	↑0.7
4/20 17:20	121.7	↑0.4
4/20 17:30	121.9	↑0.2	満潮
4/20 17:40	121.8	↓-0.1
4/20 17:50	121.6	↓-0.2
4/20 18:00	121.2	↓-0.4
4/20 18:10	120.5	↓-0.7
4/20 18:20	119.8	↓-0.7
4/20 18:30	118.8	↓-1.0
4/20 18:40	117.8	↓-1.0
4/20 18:50	116.5	↓-1.3
4/20 19:00	115.1	↓-1.4
4/20 19:10	113.6	↓-1.5
4/20 19:20	111.8	↓-1.8
4/20 19:30	110.0	↓-1.8
4/20 19:40	107.9	↓-2.1
4/20 19:50	105.7	↓-2.2
4/20 20:00	103.4	↓-2.3
4/20 20:10	101.0	↓-2.4
4/20 20:20	98.5	↓-2.5
4/20 20:30	95.9	↓-2.6
4/20 20:40	93.3	↓-2.6
4/20 20:50	90.7	↓-2.6
4/20 21:00	88.2	↓-2.5
4/20 21:10	85.8	↓-2.4
4/20 21:20	83.5	↓-2.3
4/20 21:30	81.4	↓-2.1
4/20 21:40	79.5	↓-1.9
4/20 21:50	77.9	↓-1.6
4/20 22:00	76.6	↓-1.3
4/20 22:10	75.6	↓-1.0
4/20 22:20	74.9	↓-0.7
4/20 22:30	74.5	↓-0.4	干潮
4/20 22:40	74.4	↓-0.1
4/20 22:50	74.7	↑0.3
4/20 23:00	75.2	↑0.5
4/20 23:10	76.0	↑0.8
4/20 23:20	77.0	↑1.0
4/20 23:30	78.3	↑1.3
4/20 23:40	79.7	↑1.4
4/20 23:50	81.4	↑1.7