20 (火)	05:34	13:08	21:02	-
	134cm	13cm	101cm	-
小潮 出 04:46 入 18:21 出 08:39 入 - 潮干狩り ◎ 11:06～15:32

苫小牧（北海道）2010年04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
4/20 00:00	88.5	↑0.2
4/20 00:10	88.9	↑0.4
4/20 00:20	89.5	↑0.6
4/20 00:30	90.3	↑0.8
4/20 00:40	91.3	↑1.0
4/20 00:50	92.4	↑1.1
4/20 01:00	93.7	↑1.3
4/20 01:10	95.1	↑1.4
4/20 01:20	96.6	↑1.5
4/20 01:30	98.2	↑1.6
4/20 01:40	99.8	↑1.6
4/20 01:50	101.5	↑1.7
4/20 02:00	103.2	↑1.7
4/20 02:10	105.0	↑1.8
4/20 02:20	106.7	↑1.7
4/20 02:30	108.5	↑1.8
4/20 02:40	110.2	↑1.7
4/20 02:50	112.0	↑1.8
4/20 03:00	113.8	↑1.8
4/20 03:10	115.5	↑1.7
4/20 03:20	117.3	↑1.8
4/20 03:30	119.1	↑1.8
4/20 03:40	120.8	↑1.7
4/20 03:50	122.5	↑1.7
4/20 04:00	124.2	↑1.7
4/20 04:10	125.9	↑1.7
4/20 04:20	127.4	↑1.5
4/20 04:30	128.9	↑1.5
4/20 04:40	130.2	↑1.3
4/20 04:50	131.4	↑1.2
4/20 05:00	132.4	↑1.0
4/20 05:10	133.1	↑0.7
4/20 05:20	133.6	↑0.5
4/20 05:30	133.9	↑0.3	満潮
4/20 05:40	133.8	↓-0.1
4/20 05:50	133.4	↓-0.4
4/20 06:00	132.7	↓-0.7
4/20 06:10	131.7	↓-1.0
4/20 06:20	130.4	↓-1.3
4/20 06:30	128.7	↓-1.7
4/20 06:40	126.8	↓-1.9
4/20 06:50	124.5	↓-2.3
4/20 07:00	122.0	↓-2.5
4/20 07:10	119.3	↓-2.7
4/20 07:20	116.4	↓-2.9
4/20 07:30	113.3	↓-3.1
4/20 07:40	110.0	↓-3.3
4/20 07:50	106.6	↓-3.4
4/20 08:00	103.1	↓-3.5
4/20 08:10	99.5	↓-3.6
4/20 08:20	95.9	↓-3.6
4/20 08:30	92.2	↓-3.7
4/20 08:40	88.5	↓-3.7
4/20 08:50	84.7	↓-3.8
4/20 09:00	80.9	↓-3.8
4/20 09:10	77.1	↓-3.8
4/20 09:20	73.3	↓-3.8
4/20 09:30	69.5	↓-3.8
4/20 09:40	65.6	↓-3.9	最大潮位差
4/20 09:50	61.7	↓-3.9	最大潮位差
4/20 10:00	57.9	↓-3.8
4/20 10:10	54.0	↓-3.9	最大潮位差
4/20 10:20	50.2	↓-3.8
4/20 10:30	46.4	↓-3.8
4/20 10:40	42.7	↓-3.7
4/20 10:50	39.2	↓-3.5
4/20 11:00	35.7	↓-3.5
4/20 11:10	32.4	↓-3.3
4/20 11:20	29.3	↓-3.1
4/20 11:30	26.4	↓-2.9
4/20 11:40	23.7	↓-2.7
4/20 11:50	21.3	↓-2.4
4/20 12:00	19.1	↓-2.2
4/20 12:10	17.3	↓-1.8
4/20 12:20	15.8	↓-1.5
4/20 12:30	14.5	↓-1.3
4/20 12:40	13.6	↓-0.9
4/20 12:50	13.0	↓-0.6
4/20 13:00	12.6	↓-0.4	干潮
4/20 13:10	12.6	0
4/20 13:20	12.8	↑0.2
4/20 13:30	13.3	↑0.5
4/20 13:40	13.9	↑0.6
4/20 13:50	14.8	↑0.9
4/20 14:00	16.0	↑1.2
4/20 14:10	17.2	↑1.2
4/20 14:20	18.7	↑1.5
4/20 14:30	20.3	↑1.6
4/20 14:40	22.1	↑1.8
4/20 14:50	24.1	↑2.0
4/20 15:00	26.2	↑2.1
4/20 15:10	28.4	↑2.2
4/20 15:20	30.9	↑2.5
4/20 15:30	33.4	↑2.5
4/20 15:40	36.1	↑2.7
4/20 15:50	39.0	↑2.9
4/20 16:00	42.0	↑3.0
4/20 16:10	45.1	↑3.1
4/20 16:20	48.4	↑3.3
4/20 16:30	51.7	↑3.3
4/20 16:40	55.1	↑3.4
4/20 16:50	58.5	↑3.4
4/20 17:00	61.9	↑3.4
4/20 17:10	65.4	↑3.5
4/20 17:20	68.7	↑3.3
4/20 17:30	72.0	↑3.3
4/20 17:40	75.2	↑3.2
4/20 17:50	78.2	↑3.0
4/20 18:00	81.0	↑2.8
4/20 18:10	83.7	↑2.7
4/20 18:20	86.1	↑2.4
4/20 18:30	88.4	↑2.3
4/20 18:40	90.4	↑2.0
4/20 18:50	92.1	↑1.7
4/20 19:00	93.7	↑1.6
4/20 19:10	95.0	↑1.3
4/20 19:20	96.2	↑1.2
4/20 19:30	97.1	↑0.9
4/20 19:40	97.9	↑0.8
4/20 19:50	98.6	↑0.7
4/20 20:00	99.1	↑0.5
4/20 20:10	99.5	↑0.4
4/20 20:20	99.9	↑0.4
4/20 20:30	100.1	↑0.2
4/20 20:40	100.3	↑0.2
4/20 20:50	100.4	↑0.1
4/20 21:00	100.4	0	満潮
4/20 21:10	100.4	0
4/20 21:20	100.3	↓-0.1
4/20 21:30	100.1	↓-0.2
4/20 21:40	99.9	↓-0.2
4/20 21:50	99.6	↓-0.3
4/20 22:00	99.2	↓-0.4
4/20 22:10	98.8	↓-0.4
4/20 22:20	98.3	↓-0.5
4/20 22:30	97.7	↓-0.6
4/20 22:40	97.1	↓-0.6
4/20 22:50	96.4	↓-0.7
4/20 23:00	95.8	↓-0.6
4/20 23:10	95.1	↓-0.7
4/20 23:20	94.4	↓-0.7
4/20 23:30	93.8	↓-0.6
4/20 23:40	93.2	↓-0.6
4/20 23:50	92.7	↓-0.5