20 (木)	04:45	10:23	16:07	22:39
	130cm	57cm	141cm	21cm
大潮 出 06:23 入 17:13 出 07:00 入 18:53

苫小牧（北海道）2053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	34.5	↑2.9
2/20 00:10	37.6	↑3.1
2/20 00:20	41.1	↑3.5
2/20 00:30	44.7	↑3.6
2/20 00:40	48.6	↑3.9
2/20 00:50	52.8	↑4.2
2/20 01:00	57.1	↑4.3
2/20 01:10	61.6	↑4.5
2/20 01:20	66.3	↑4.7
2/20 01:30	71.2	↑4.9
2/20 01:40	76.0	↑4.8
2/20 01:50	81.0	↑5.0	最大潮位差
2/20 02:00	85.8	↑4.8
2/20 02:10	90.6	↑4.8
2/20 02:20	95.3	↑4.7
2/20 02:30	99.8	↑4.5
2/20 02:40	104.1	↑4.3
2/20 02:50	108.1	↑4.0
2/20 03:00	111.8	↑3.7
2/20 03:10	115.1	↑3.3
2/20 03:20	118.1	↑3.0
2/20 03:30	120.7	↑2.6
2/20 03:40	122.9	↑2.2
2/20 03:50	124.8	↑1.9
2/20 04:00	126.3	↑1.5
2/20 04:10	127.5	↑1.2
2/20 04:20	128.3	↑0.8
2/20 04:30	128.9	↑0.6
2/20 04:40	129.1	↑0.2	満潮
2/20 04:50	129.1	0
2/20 05:00	128.8	↓-0.3
2/20 05:10	128.3	↓-0.5
2/20 05:20	127.6	↓-0.7
2/20 05:30	126.7	↓-0.9
2/20 05:40	125.5	↓-1.2
2/20 05:50	124.2	↓-1.3
2/20 06:00	122.6	↓-1.6
2/20 06:10	120.8	↓-1.8
2/20 06:20	118.8	↓-2.0
2/20 06:30	116.6	↓-2.2
2/20 06:40	114.1	↓-2.5
2/20 06:50	111.4	↓-2.7
2/20 07:00	108.6	↓-2.8
2/20 07:10	105.5	↓-3.1
2/20 07:20	102.2	↓-3.3
2/20 07:30	98.7	↓-3.5
2/20 07:40	95.2	↓-3.5
2/20 07:50	91.6	↓-3.6
2/20 08:00	87.9	↓-3.7
2/20 08:10	84.2	↓-3.7
2/20 08:20	80.6	↓-3.6
2/20 08:30	77.1	↓-3.5
2/20 08:40	73.8	↓-3.3
2/20 08:50	70.7	↓-3.1
2/20 09:00	67.8	↓-2.9
2/20 09:10	65.2	↓-2.6
2/20 09:20	62.9	↓-2.3
2/20 09:30	61.0	↓-1.9
2/20 09:40	59.4	↓-1.6
2/20 09:50	58.1	↓-1.3
2/20 10:00	57.2	↓-0.9
2/20 10:10	56.7	↓-0.5
2/20 10:20	56.5	↓-0.2	干潮
2/20 10:30	56.6	↑0.1
2/20 10:40	57.0	↑0.4
2/20 10:50	57.6	↑0.6
2/20 11:00	58.6	↑1.0
2/20 11:10	59.7	↑1.1
2/20 11:20	61.1	↑1.4
2/20 11:30	62.8	↑1.7
2/20 11:40	64.6	↑1.8
2/20 11:50	66.6	↑2.0
2/20 12:00	68.8	↑2.2
2/20 12:10	71.3	↑2.5
2/20 12:20	73.9	↑2.6
2/20 12:30	76.7	↑2.8
2/20 12:40	79.7	↑3.0
2/20 12:50	83.0	↑3.3
2/20 13:00	86.4	↑3.4
2/20 13:10	90.0	↑3.6
2/20 13:20	93.7	↑3.7
2/20 13:30	97.6	↑3.9
2/20 13:40	101.5	↑3.9
2/20 13:50	105.5	↑4.0
2/20 14:00	109.5	↑4.0
2/20 14:10	113.5	↑4.0
2/20 14:20	117.4	↑3.9
2/20 14:30	121.1	↑3.7
2/20 14:40	124.6	↑3.5
2/20 14:50	127.9	↑3.3
2/20 15:00	130.9	↑3.0
2/20 15:10	133.5	↑2.6
2/20 15:20	135.7	↑2.2
2/20 15:30	137.5	↑1.8
2/20 15:40	138.8	↑1.3
2/20 15:50	139.8	↑1.0
2/20 16:00	140.2	↑0.4	満潮
2/20 16:10	140.3	↑0.1
2/20 16:20	139.9	↓-0.4
2/20 16:30	139.1	↓-0.8
2/20 16:40	138.0	↓-1.1
2/20 16:50	136.5	↓-1.5
2/20 17:00	134.7	↓-1.8
2/20 17:10	132.6	↓-2.1
2/20 17:20	130.2	↓-2.4
2/20 17:30	127.6	↓-2.6
2/20 17:40	124.7	↓-2.9
2/20 17:50	121.7	↓-3.0
2/20 18:00	118.5	↓-3.2
2/20 18:10	115.1	↓-3.4
2/20 18:20	111.5	↓-3.6
2/20 18:30	107.8	↓-3.7
2/20 18:40	103.8	↓-4.0
2/20 18:50	99.8	↓-4.0
2/20 19:00	95.5	↓-4.3
2/20 19:10	91.1	↓-4.4
2/20 19:20	86.6	↓-4.5
2/20 19:30	81.9	↓-4.7
2/20 19:40	77.2	↓-4.7
2/20 19:50	72.4	↓-4.8
2/20 20:00	67.5	↓-4.9
2/20 20:10	62.7	↓-4.8
2/20 20:20	57.9	↓-4.8
2/20 20:30	53.3	↓-4.6
2/20 20:40	48.8	↓-4.5
2/20 20:50	44.5	↓-4.3
2/20 21:00	40.4	↓-4.1
2/20 21:10	36.7	↓-3.7
2/20 21:20	33.2	↓-3.5
2/20 21:30	30.2	↓-3.0
2/20 21:40	27.6	↓-2.6
2/20 21:50	25.3	↓-2.3
2/20 22:00	23.6	↓-1.7
2/20 22:10	22.2	↓-1.4
2/20 22:20	21.3	↓-0.9
2/20 22:30	20.7	↓-0.6	干潮
2/20 22:40	20.6	↓-0.1
2/20 22:50	20.8	↑0.2
2/20 23:00	21.4	↑0.6
2/20 23:10	22.4	↑1.0
2/20 23:20	23.6	↑1.2
2/20 23:30	25.1	↑1.5
2/20 23:40	26.8	↑1.7
2/20 23:50	28.9	↑2.1