20 (木)	05:39	11:30	17:33	23:59
	140cm	55cm	153cm	43cm
中潮 出 06:21 入 17:09 出 21:04 入 08:16

東静内（北海道）2003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	28.9	↑1.2
2/20 00:10	30.4	↑1.5
2/20 00:20	32.3	↑1.9
2/20 00:30	34.6	↑2.3
2/20 00:40	37.2	↑2.6
2/20 00:50	40.1	↑2.9
2/20 01:00	43.3	↑3.2
2/20 01:10	46.9	↑3.6
2/20 01:20	50.7	↑3.8
2/20 01:30	54.7	↑4.0
2/20 01:40	58.9	↑4.2
2/20 01:50	63.3	↑4.4
2/20 02:00	67.9	↑4.6
2/20 02:10	72.5	↑4.6
2/20 02:20	77.2	↑4.7
2/20 02:30	82.0	↑4.8	最大潮位差
2/20 02:40	86.8	↑4.8	最大潮位差
2/20 02:50	91.5	↑4.7
2/20 03:00	96.2	↑4.7
2/20 03:10	100.8	↑4.6
2/20 03:20	105.3	↑4.5
2/20 03:30	109.5	↑4.2
2/20 03:40	113.6	↑4.1
2/20 03:50	117.5	↑3.9
2/20 04:00	121.1	↑3.6
2/20 04:10	124.4	↑3.3
2/20 04:20	127.5	↑3.1
2/20 04:30	130.2	↑2.7
2/20 04:40	132.6	↑2.4
2/20 04:50	134.6	↑2.0
2/20 05:00	136.2	↑1.6
2/20 05:10	137.5	↑1.3
2/20 05:20	138.4	↑0.9
2/20 05:30	138.9	↑0.5	満潮
2/20 05:40	139.0	↑0.1
2/20 05:50	138.8	↓-0.2
2/20 06:00	138.1	↓-0.7
2/20 06:10	137.2	↓-0.9
2/20 06:20	135.8	↓-1.4
2/20 06:30	134.2	↓-1.6
2/20 06:40	132.2	↓-2.0
2/20 06:50	130.0	↓-2.2
2/20 07:00	127.4	↓-2.6
2/20 07:10	124.7	↓-2.7
2/20 07:20	121.7	↓-3.0
2/20 07:30	118.5	↓-3.2
2/20 07:40	115.1	↓-3.4
2/20 07:50	111.7	↓-3.4
2/20 08:00	108.1	↓-3.6
2/20 08:10	104.4	↓-3.7
2/20 08:20	100.7	↓-3.7
2/20 08:30	96.9	↓-3.8
2/20 08:40	93.2	↓-3.7
2/20 08:50	89.5	↓-3.7
2/20 09:00	85.8	↓-3.7
2/20 09:10	82.3	↓-3.5
2/20 09:20	78.9	↓-3.4
2/20 09:30	75.6	↓-3.3
2/20 09:40	72.5	↓-3.1
2/20 09:50	69.6	↓-2.9
2/20 10:00	66.8	↓-2.8
2/20 10:10	64.4	↓-2.4
2/20 10:20	62.1	↓-2.3
2/20 10:30	60.2	↓-1.9
2/20 10:40	58.5	↓-1.7
2/20 10:50	57.1	↓-1.4
2/20 11:00	56.0	↓-1.1
2/20 11:10	55.2	↓-0.8
2/20 11:20	54.8	↓-0.4	干潮
2/20 11:30	54.7	↓-0.1	干潮
2/20 11:40	54.9	↑0.2
2/20 11:50	55.4	↑0.5
2/20 12:00	56.3	↑0.9
2/20 12:10	57.5	↑1.2
2/20 12:20	59.1	↑1.6
2/20 12:30	60.9	↑1.8
2/20 12:40	63.1	↑2.2
2/20 12:50	65.5	↑2.4
2/20 13:00	68.2	↑2.7
2/20 13:10	71.2	↑3.0
2/20 13:20	74.5	↑3.3
2/20 13:30	77.9	↑3.4
2/20 13:40	81.6	↑3.7
2/20 13:50	85.4	↑3.8
2/20 14:00	89.4	↑4.0
2/20 14:10	93.5	↑4.1
2/20 14:20	97.7	↑4.2
2/20 14:30	101.9	↑4.2
2/20 14:40	106.2	↑4.3
2/20 14:50	110.5	↑4.3
2/20 15:00	114.7	↑4.2
2/20 15:10	118.8	↑4.1
2/20 15:20	122.9	↑4.1
2/20 15:30	126.8	↑3.9
2/20 15:40	130.5	↑3.7
2/20 15:50	134.0	↑3.5
2/20 16:00	137.3	↑3.3
2/20 16:10	140.4	↑3.1
2/20 16:20	143.1	↑2.7
2/20 16:30	145.6	↑2.5
2/20 16:40	147.7	↑2.1
2/20 16:50	149.4	↑1.7
2/20 17:00	150.8	↑1.4
2/20 17:10	151.9	↑1.1
2/20 17:20	152.5	↑0.6
2/20 17:30	152.8	↑0.3	満潮
2/20 17:40	152.7	↓-0.1
2/20 17:50	152.2	↓-0.5
2/20 18:00	151.3	↓-0.9
2/20 18:10	150.0	↓-1.3
2/20 18:20	148.4	↓-1.6
2/20 18:30	146.4	↓-2.0
2/20 18:40	144.1	↓-2.3
2/20 18:50	141.5	↓-2.6
2/20 19:00	138.5	↓-3.0
2/20 19:10	135.3	↓-3.2
2/20 19:20	131.8	↓-3.5
2/20 19:30	128.2	↓-3.6
2/20 19:40	124.3	↓-3.9
2/20 19:50	120.2	↓-4.1
2/20 20:00	116.0	↓-4.2
2/20 20:10	111.7	↓-4.3
2/20 20:20	107.3	↓-4.4
2/20 20:30	102.9	↓-4.4
2/20 20:40	98.4	↓-4.5
2/20 20:50	94.0	↓-4.4
2/20 21:00	89.6	↓-4.4
2/20 21:10	85.2	↓-4.4
2/20 21:20	81.0	↓-4.2
2/20 21:30	76.8	↓-4.2
2/20 21:40	72.8	↓-4.0
2/20 21:50	69.0	↓-3.8
2/20 22:00	65.4	↓-3.6
2/20 22:10	61.9	↓-3.5
2/20 22:20	58.7	↓-3.2
2/20 22:30	55.8	↓-2.9
2/20 22:40	53.1	↓-2.7
2/20 22:50	50.7	↓-2.4
2/20 23:00	48.7	↓-2.0
2/20 23:10	46.9	↓-1.8
2/20 23:20	45.4	↓-1.5
2/20 23:30	44.3	↓-1.1
2/20 23:40	43.5	↓-0.8
2/20 23:50	43.1	↓-0.4	干潮