20 (金)	04:34	10:06	15:54	22:31
	131cm	54cm	147cm	18cm
大潮 出 06:25 入 17:12 出 06:51 入 18:52

苫小牧（北海道）2015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	35.0	↑3.7
2/20 00:10	38.9	↑3.9
2/20 00:20	43.0	↑4.1
2/20 00:30	47.5	↑4.5
2/20 00:40	52.1	↑4.6
2/20 00:50	57.0	↑4.9
2/20 01:00	62.0	↑5.0
2/20 01:10	67.2	↑5.2
2/20 01:20	72.4	↑5.2
2/20 01:30	77.6	↑5.2
2/20 01:40	82.8	↑5.2
2/20 01:50	87.9	↑5.1
2/20 02:00	92.9	↑5.0
2/20 02:10	97.7	↑4.8
2/20 02:20	102.2	↑4.5
2/20 02:30	106.5	↑4.3
2/20 02:40	110.4	↑3.9
2/20 02:50	114.0	↑3.6
2/20 03:00	117.3	↑3.3
2/20 03:10	120.2	↑2.9
2/20 03:20	122.7	↑2.5
2/20 03:30	124.8	↑2.1
2/20 03:40	126.6	↑1.8
2/20 03:50	128.0	↑1.4
2/20 04:00	129.1	↑1.1
2/20 04:10	129.9	↑0.8
2/20 04:20	130.4	↑0.5
2/20 04:30	130.6	↑0.2	満潮
2/20 04:40	130.6	0
2/20 04:50	130.3	↓-0.3
2/20 05:00	129.7	↓-0.6
2/20 05:10	128.9	↓-0.8
2/20 05:20	127.8	↓-1.1
2/20 05:30	126.5	↓-1.3
2/20 05:40	125.0	↓-1.5
2/20 05:50	123.1	↓-1.9
2/20 06:00	121.0	↓-2.1
2/20 06:10	118.7	↓-2.3
2/20 06:20	116.0	↓-2.7
2/20 06:30	113.1	↓-2.9
2/20 06:40	110.0	↓-3.1
2/20 06:50	106.7	↓-3.3
2/20 07:00	103.1	↓-3.6
2/20 07:10	99.4	↓-3.7
2/20 07:20	95.6	↓-3.8
2/20 07:30	91.6	↓-4.0
2/20 07:40	87.7	↓-3.9
2/20 07:50	83.8	↓-3.9
2/20 08:00	79.9	↓-3.9
2/20 08:10	76.2	↓-3.7
2/20 08:20	72.6	↓-3.6
2/20 08:30	69.3	↓-3.3
2/20 08:40	66.2	↓-3.1
2/20 08:50	63.5	↓-2.7
2/20 09:00	61.0	↓-2.5
2/20 09:10	58.9	↓-2.1
2/20 09:20	57.2	↓-1.7
2/20 09:30	55.8	↓-1.4
2/20 09:40	54.8	↓-1.0
2/20 09:50	54.1	↓-0.7
2/20 10:00	53.8	↓-0.3	干潮
2/20 10:10	53.8	0
2/20 10:20	54.1	↑0.3
2/20 10:30	54.7	↑0.6
2/20 10:40	55.6	↑0.9
2/20 10:50	56.7	↑1.1
2/20 11:00	58.1	↑1.4
2/20 11:10	59.8	↑1.7
2/20 11:20	61.7	↑1.9
2/20 11:30	63.8	↑2.1
2/20 11:40	66.2	↑2.4
2/20 11:50	68.8	↑2.6
2/20 12:00	71.7	↑2.9
2/20 12:10	74.8	↑3.1
2/20 12:20	78.2	↑3.4
2/20 12:30	81.7	↑3.5
2/20 12:40	85.6	↑3.9
2/20 12:50	89.6	↑4.0
2/20 13:00	93.7	↑4.1
2/20 13:10	98.1	↑4.4
2/20 13:20	102.5	↑4.4
2/20 13:30	106.9	↑4.4
2/20 13:40	111.4	↑4.5
2/20 13:50	115.8	↑4.4
2/20 14:00	120.1	↑4.3
2/20 14:10	124.3	↑4.2
2/20 14:20	128.2	↑3.9
2/20 14:30	131.8	↑3.6
2/20 14:40	135.1	↑3.3
2/20 14:50	138.1	↑3.0
2/20 15:00	140.6	↑2.5
2/20 15:10	142.8	↑2.2
2/20 15:20	144.4	↑1.6
2/20 15:30	145.7	↑1.3
2/20 15:40	146.4	↑0.7
2/20 15:50	146.8	↑0.4	満潮
2/20 16:00	146.7	↓-0.1
2/20 16:10	146.2	↓-0.5
2/20 16:20	145.3	↓-0.9
2/20 16:30	144.1	↓-1.2
2/20 16:40	142.5	↓-1.6
2/20 16:50	140.6	↓-1.9
2/20 17:00	138.4	↓-2.2
2/20 17:10	135.9	↓-2.5
2/20 17:20	133.2	↓-2.7
2/20 17:30	130.2	↓-3.0
2/20 17:40	127.0	↓-3.2
2/20 17:50	123.6	↓-3.4
2/20 18:00	119.9	↓-3.7
2/20 18:10	116.0	↓-3.9
2/20 18:20	111.9	↓-4.1
2/20 18:30	107.5	↓-4.4
2/20 18:40	103.0	↓-4.5
2/20 18:50	98.2	↓-4.8
2/20 19:00	93.3	↓-4.9
2/20 19:10	88.2	↓-5.1
2/20 19:20	83.0	↓-5.2
2/20 19:30	77.6	↓-5.4	最大潮位差
2/20 19:40	72.3	↓-5.3
2/20 19:50	66.9	↓-5.4	最大潮位差
2/20 20:00	61.6	↓-5.3
2/20 20:10	56.4	↓-5.2
2/20 20:20	51.4	↓-5.0
2/20 20:30	46.6	↓-4.8
2/20 20:40	42.0	↓-4.6
2/20 20:50	37.8	↓-4.2
2/20 21:00	33.9	↓-3.9
2/20 21:10	30.4	↓-3.5
2/20 21:20	27.3	↓-3.1
2/20 21:30	24.6	↓-2.7
2/20 21:40	22.3	↓-2.3
2/20 21:50	20.5	↓-1.8
2/20 22:00	19.1	↓-1.4
2/20 22:10	18.1	↓-1.0
2/20 22:20	17.6	↓-0.5
2/20 22:30	17.4	↓-0.2	干潮
2/20 22:40	17.6	↑0.2
2/20 22:50	18.1	↑0.5
2/20 23:00	18.9	↑0.8
2/20 23:10	20.1	↑1.2
2/20 23:20	21.6	↑1.5
2/20 23:30	23.3	↑1.7
2/20 23:40	25.3	↑2.0
2/20 23:50	27.6	↑2.3