20 (土)	06:09	00:02	19:08	12:57
	135cm	58cm	107cm	36cm
小潮 出 06:24 入 17:13 出 08:37 入 23:35

苫小牧（北海道）2010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	57.9	↓-0.2	干潮
2/20 00:10	58.1	↑0.2
2/20 00:20	58.5	↑0.4
2/20 00:30	59.3	↑0.8
2/20 00:40	60.3	↑1.0
2/20 00:50	61.6	↑1.3
2/20 01:00	63.1	↑1.5
2/20 01:10	64.9	↑1.8
2/20 01:20	66.8	↑1.9
2/20 01:30	68.9	↑2.1
2/20 01:40	71.2	↑2.3
2/20 01:50	73.6	↑2.4
2/20 02:00	76.1	↑2.5
2/20 02:10	78.7	↑2.6
2/20 02:20	81.4	↑2.7
2/20 02:30	84.1	↑2.7
2/20 02:40	86.9	↑2.8
2/20 02:50	89.8	↑2.9
2/20 03:00	92.7	↑2.9
2/20 03:10	95.7	↑3.0
2/20 03:20	98.6	↑2.9
2/20 03:30	101.6	↑3.0
2/20 03:40	104.7	↑3.1
2/20 03:50	107.7	↑3.0
2/20 04:00	110.7	↑3.0
2/20 04:10	113.6	↑2.9
2/20 04:20	116.5	↑2.9
2/20 04:30	119.3	↑2.8
2/20 04:40	121.9	↑2.6
2/20 04:50	124.4	↑2.5
2/20 05:00	126.7	↑2.3
2/20 05:10	128.8	↑2.1
2/20 05:20	130.6	↑1.8
2/20 05:30	132.1	↑1.5
2/20 05:40	133.2	↑1.1
2/20 05:50	134.1	↑0.9
2/20 06:00	134.5	↑0.4	満潮
2/20 06:10	134.7	↑0.2
2/20 06:20	134.4	↓-0.3
2/20 06:30	133.8	↓-0.6
2/20 06:40	132.9	↓-0.9
2/20 06:50	131.6	↓-1.3
2/20 07:00	130.0	↓-1.6
2/20 07:10	128.1	↓-1.9
2/20 07:20	126.0	↓-2.1
2/20 07:30	123.6	↓-2.4
2/20 07:40	121.1	↓-2.5
2/20 07:50	118.4	↓-2.7
2/20 08:00	115.5	↓-2.9
2/20 08:10	112.5	↓-3.0
2/20 08:20	109.4	↓-3.1
2/20 08:30	106.2	↓-3.2
2/20 08:40	103.0	↓-3.2
2/20 08:50	99.6	↓-3.4
2/20 09:00	96.3	↓-3.3
2/20 09:10	92.8	↓-3.5
2/20 09:20	89.4	↓-3.4
2/20 09:30	85.9	↓-3.5
2/20 09:40	82.4	↓-3.5
2/20 09:50	78.8	↓-3.6	最大潮位差
2/20 10:00	75.3	↓-3.5
2/20 10:10	71.7	↓-3.6	最大潮位差
2/20 10:20	68.2	↓-3.5
2/20 10:30	64.7	↓-3.5
2/20 10:40	61.3	↓-3.4
2/20 10:50	58.0	↓-3.3
2/20 11:00	54.8	↓-3.2
2/20 11:10	51.8	↓-3.0
2/20 11:20	48.9	↓-2.9
2/20 11:30	46.3	↓-2.6
2/20 11:40	43.9	↓-2.4
2/20 11:50	41.8	↓-2.1
2/20 12:00	39.9	↓-1.9
2/20 12:10	38.4	↓-1.5
2/20 12:20	37.1	↓-1.3
2/20 12:30	36.2	↓-0.9
2/20 12:40	35.6	↓-0.6
2/20 12:50	35.2	↓-0.4	干潮
2/20 13:00	35.2	0
2/20 13:10	35.5	↑0.3
2/20 13:20	36.0	↑0.5
2/20 13:30	36.8	↑0.8
2/20 13:40	37.8	↑1.0
2/20 13:50	39.0	↑1.2
2/20 14:00	40.4	↑1.4
2/20 14:10	42.0	↑1.6
2/20 14:20	43.7	↑1.7
2/20 14:30	45.6	↑1.9
2/20 14:40	47.6	↑2.0
2/20 14:50	49.7	↑2.1
2/20 15:00	52.0	↑2.3
2/20 15:10	54.4	↑2.4
2/20 15:20	56.8	↑2.4
2/20 15:30	59.4	↑2.6
2/20 15:40	62.1	↑2.7
2/20 15:50	64.9	↑2.8
2/20 16:00	67.7	↑2.8
2/20 16:10	70.6	↑2.9
2/20 16:20	73.6	↑3.0
2/20 16:30	76.6	↑3.0
2/20 16:40	79.6	↑3.0
2/20 16:50	82.6	↑3.0
2/20 17:00	85.5	↑2.9
2/20 17:10	88.3	↑2.8
2/20 17:20	91.1	↑2.8
2/20 17:30	93.6	↑2.5
2/20 17:40	96.0	↑2.4
2/20 17:50	98.2	↑2.2
2/20 18:00	100.1	↑1.9
2/20 18:10	101.8	↑1.7
2/20 18:20	103.2	↑1.4
2/20 18:30	104.4	↑1.2
2/20 18:40	105.2	↑0.8
2/20 18:50	105.8	↑0.6
2/20 19:00	106.1	↑0.3	満潮
2/20 19:10	106.2	↑0.1
2/20 19:20	106.0	↓-0.2
2/20 19:30	105.6	↓-0.4
2/20 19:40	104.9	↓-0.7
2/20 19:50	104.2	↓-0.7
2/20 20:00	103.2	↓-1.0
2/20 20:10	102.1	↓-1.1
2/20 20:20	101.0	↓-1.1
2/20 20:30	99.7	↓-1.3
2/20 20:40	98.4	↓-1.3
2/20 20:50	97.0	↓-1.4
2/20 21:00	95.5	↓-1.5
2/20 21:10	94.1	↓-1.4
2/20 21:20	92.5	↓-1.6
2/20 21:30	91.0	↓-1.5
2/20 21:40	89.5	↓-1.5
2/20 21:50	87.9	↓-1.6
2/20 22:00	86.3	↓-1.6
2/20 22:10	84.7	↓-1.6
2/20 22:20	83.1	↓-1.6
2/20 22:30	81.5	↓-1.6
2/20 22:40	80.0	↓-1.5
2/20 22:50	78.4	↓-1.6
2/20 23:00	77.0	↓-1.4
2/20 23:10	75.6	↓-1.4
2/20 23:20	74.3	↓-1.3
2/20 23:30	73.2	↓-1.1
2/20 23:40	72.2	↓-1.0
2/20 23:50	71.4	↓-0.8