20 (日)	03:35	08:10	13:44	20:56
	120cm	83cm	140cm	12cm
大潮 出 06:24 入 17:13 出 04:58 入 15:39

苫小牧（北海道）2050年02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
2/20 00:00	73.6	↑4.1
2/20 00:10	77.6	↑4.0
2/20 00:20	81.5	↑3.9
2/20 00:30	85.3	↑3.8
2/20 00:40	89.0	↑3.7
2/20 00:50	92.5	↑3.5
2/20 01:00	95.7	↑3.2
2/20 01:10	98.8	↑3.1
2/20 01:20	101.6	↑2.8
2/20 01:30	104.3	↑2.7
2/20 01:40	106.7	↑2.4
2/20 01:50	108.9	↑2.2
2/20 02:00	110.9	↑2.0
2/20 02:10	112.6	↑1.7
2/20 02:20	114.2	↑1.6
2/20 02:30	115.6	↑1.4
2/20 02:40	116.8	↑1.2
2/20 02:50	117.7	↑0.9
2/20 03:00	118.5	↑0.8
2/20 03:10	119.1	↑0.6
2/20 03:20	119.5	↑0.4
2/20 03:30	119.7	↑0.2	満潮
2/20 03:40	119.6	↓-0.1
2/20 03:50	119.4	↓-0.2
2/20 04:00	118.9	↓-0.5
2/20 04:10	118.2	↓-0.7
2/20 04:20	117.3	↓-0.9
2/20 04:30	116.2	↓-1.1
2/20 04:40	114.9	↓-1.3
2/20 04:50	113.3	↓-1.6
2/20 05:00	111.6	↓-1.7
2/20 05:10	109.7	↓-1.9
2/20 05:20	107.7	↓-2.0
2/20 05:30	105.5	↓-2.2
2/20 05:40	103.3	↓-2.2
2/20 05:50	101.1	↓-2.2
2/20 06:00	98.8	↓-2.3
2/20 06:10	96.6	↓-2.2
2/20 06:20	94.5	↓-2.1
2/20 06:30	92.5	↓-2.0
2/20 06:40	90.5	↓-2.0
2/20 06:50	88.8	↓-1.7
2/20 07:00	87.2	↓-1.6
2/20 07:10	85.9	↓-1.3
2/20 07:20	84.7	↓-1.2
2/20 07:30	83.7	↓-1.0
2/20 07:40	83.0	↓-0.7
2/20 07:50	82.5	↓-0.5
2/20 08:00	82.2	↓-0.3	干潮
2/20 08:10	82.1	↓-0.1	干潮
2/20 08:20	82.2	↑0.1
2/20 08:30	82.5	↑0.3
2/20 08:40	83.0	↑0.5
2/20 08:50	83.7	↑0.7
2/20 09:00	84.5	↑0.8
2/20 09:10	85.5	↑1.0
2/20 09:20	86.7	↑1.2
2/20 09:30	88.0	↑1.3
2/20 09:40	89.5	↑1.5
2/20 09:50	91.1	↑1.6
2/20 10:00	92.9	↑1.8
2/20 10:10	94.9	↑2.0
2/20 10:20	97.0	↑2.1
2/20 10:30	99.3	↑2.3
2/20 10:40	101.7	↑2.4
2/20 10:50	104.3	↑2.6
2/20 11:00	106.9	↑2.6
2/20 11:10	109.7	↑2.8
2/20 11:20	112.5	↑2.8
2/20 11:30	115.3	↑2.8
2/20 11:40	118.2	↑2.9
2/20 11:50	121.0	↑2.8
2/20 12:00	123.7	↑2.7
2/20 12:10	126.3	↑2.6
2/20 12:20	128.8	↑2.5
2/20 12:30	131.1	↑2.3
2/20 12:40	133.1	↑2.0
2/20 12:50	134.9	↑1.8
2/20 13:00	136.4	↑1.5
2/20 13:10	137.6	↑1.2
2/20 13:20	138.5	↑0.9
2/20 13:30	139.1	↑0.6
2/20 13:40	139.4	↑0.3	満潮
2/20 13:50	139.3	↓-0.1
2/20 14:00	138.9	↓-0.4
2/20 14:10	138.2	↓-0.7
2/20 14:20	137.2	↓-1.0
2/20 14:30	135.9	↓-1.3
2/20 14:40	134.3	↓-1.6
2/20 14:50	132.5	↓-1.8
2/20 15:00	130.4	↓-2.1
2/20 15:10	128.1	↓-2.3
2/20 15:20	125.6	↓-2.5
2/20 15:30	122.9	↓-2.7
2/20 15:40	119.9	↓-3.0
2/20 15:50	116.8	↓-3.1
2/20 16:00	113.4	↓-3.4
2/20 16:10	109.8	↓-3.6
2/20 16:20	106.1	↓-3.7
2/20 16:30	102.1	↓-4.0
2/20 16:40	98.0	↓-4.1
2/20 16:50	93.7	↓-4.3
2/20 17:00	89.2	↓-4.5
2/20 17:10	84.5	↓-4.7
2/20 17:20	79.8	↓-4.7
2/20 17:30	75.0	↓-4.8
2/20 17:40	70.0	↓-5.0	最大潮位差
2/20 17:50	65.1	↓-4.9
2/20 18:00	60.2	↓-4.9
2/20 18:10	55.4	↓-4.8
2/20 18:20	50.6	↓-4.8
2/20 18:30	46.0	↓-4.6
2/20 18:40	41.6	↓-4.4
2/20 18:50	37.4	↓-4.2
2/20 19:00	33.4	↓-4.0
2/20 19:10	29.7	↓-3.7
2/20 19:20	26.4	↓-3.3
2/20 19:30	23.4	↓-3.0
2/20 19:40	20.7	↓-2.7
2/20 19:50	18.4	↓-2.3
2/20 20:00	16.4	↓-2.0
2/20 20:10	14.8	↓-1.6
2/20 20:20	13.5	↓-1.3
2/20 20:30	12.5	↓-1.0
2/20 20:40	11.9	↓-0.6
2/20 20:50	11.6	↓-0.3	干潮
2/20 21:00	11.6	0
2/20 21:10	12.0	↑0.4
2/20 21:20	12.6	↑0.6
2/20 21:30	13.4	↑0.8
2/20 21:40	14.6	↑1.2
2/20 21:50	16.1	↑1.5
2/20 22:00	17.8	↑1.7
2/20 22:10	19.8	↑2.0
2/20 22:20	22.1	↑2.3
2/20 22:30	24.7	↑2.6
2/20 22:40	27.6	↑2.9
2/20 22:50	30.7	↑3.1
2/20 23:00	34.1	↑3.4
2/20 23:10	37.8	↑3.7
2/20 23:20	41.7	↑3.9
2/20 23:30	45.8	↑4.1
2/20 23:40	50.2	↑4.4
2/20 23:50	54.6	↑4.4