31 (日)	02:49	07:07	12:54	20:22
	116cm	91cm	139cm	6cm
大潮 出 07:03 入 16:12 出 14:39 入 04:21

苫小牧（北海道）2017年12月31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
12/31 00:00	88.9	↑3.4
12/31 00:10	92.1	↑3.2
12/31 00:20	95.1	↑3.0
12/31 00:30	98.0	↑2.9
12/31 00:40	100.6	↑2.6
12/31 00:50	102.9	↑2.3
12/31 01:00	105.1	↑2.2
12/31 01:10	107.0	↑1.9
12/31 01:20	108.7	↑1.7
12/31 01:30	110.2	↑1.5
12/31 01:40	111.4	↑1.2
12/31 01:50	112.5	↑1.1
12/31 02:00	113.3	↑0.8
12/31 02:10	114.0	↑0.7
12/31 02:20	114.6	↑0.6
12/31 02:30	114.9	↑0.3
12/31 02:40	115.1	↑0.2	満潮
12/31 02:50	115.2	↑0.1
12/31 03:00	115.1	↓-0.1
12/31 03:10	114.8	↓-0.3
12/31 03:20	114.4	↓-0.4
12/31 03:30	113.9	↓-0.5
12/31 03:40	113.2	↓-0.7
12/31 03:50	112.4	↓-0.8
12/31 04:00	111.5	↓-0.9
12/31 04:10	110.4	↓-1.1
12/31 04:20	109.2	↓-1.2
12/31 04:30	107.8	↓-1.4
12/31 04:40	106.4	↓-1.4
12/31 04:50	104.9	↓-1.5
12/31 05:00	103.4	↓-1.5
12/31 05:10	101.8	↓-1.6
12/31 05:20	100.3	↓-1.5
12/31 05:30	98.7	↓-1.6
12/31 05:40	97.2	↓-1.5
12/31 05:50	95.8	↓-1.4
12/31 06:00	94.6	↓-1.2
12/31 06:10	93.4	↓-1.2
12/31 06:20	92.4	↓-1.0
12/31 06:30	91.6	↓-0.8
12/31 06:40	91.0	↓-0.6
12/31 06:50	90.6	↓-0.4
12/31 07:00	90.4	↓-0.2	干潮
12/31 07:10	90.3	↓-0.1
12/31 07:20	90.5	↑0.2
12/31 07:30	90.9	↑0.4
12/31 07:40	91.4	↑0.5
12/31 07:50	92.1	↑0.7
12/31 08:00	93.0	↑0.9
12/31 08:10	94.0	↑1.0
12/31 08:20	95.1	↑1.1
12/31 08:30	96.4	↑1.3
12/31 08:40	97.7	↑1.3
12/31 08:50	99.1	↑1.4
12/31 09:00	100.7	↑1.6
12/31 09:10	102.2	↑1.5
12/31 09:20	103.9	↑1.7
12/31 09:30	105.6	↑1.7
12/31 09:40	107.5	↑1.9
12/31 09:50	109.3	↑1.8
12/31 10:00	111.3	↑2.0
12/31 10:10	113.3	↑2.0
12/31 10:20	115.3	↑2.0
12/31 10:30	117.4	↑2.1
12/31 10:40	119.5	↑2.1
12/31 10:50	121.7	↑2.2
12/31 11:00	123.8	↑2.1
12/31 11:10	125.9	↑2.1
12/31 11:20	127.9	↑2.0
12/31 11:30	129.9	↑2.0
12/31 11:40	131.7	↑1.8
12/31 11:50	133.4	↑1.7
12/31 12:00	134.9	↑1.5
12/31 12:10	136.1	↑1.2
12/31 12:20	137.2	↑1.1
12/31 12:30	138.0	↑0.8
12/31 12:40	138.5	↑0.5
12/31 12:50	138.7	↑0.2	満潮
12/31 13:00	138.7	0
12/31 13:10	138.3	↓-0.4
12/31 13:20	137.7	↓-0.6
12/31 13:30	136.7	↓-1.0
12/31 13:40	135.5	↓-1.2
12/31 13:50	133.9	↓-1.6
12/31 14:00	132.2	↓-1.7
12/31 14:10	130.1	↓-2.1
12/31 14:20	127.9	↓-2.2
12/31 14:30	125.4	↓-2.5
12/31 14:40	122.7	↓-2.7
12/31 14:50	119.9	↓-2.8
12/31 15:00	116.8	↓-3.1
12/31 15:10	113.6	↓-3.2
12/31 15:20	110.2	↓-3.4
12/31 15:30	106.7	↓-3.5
12/31 15:40	103.0	↓-3.7
12/31 15:50	99.1	↓-3.9
12/31 16:00	95.1	↓-4.0
12/31 16:10	90.9	↓-4.2
12/31 16:20	86.6	↓-4.3
12/31 16:30	82.2	↓-4.4
12/31 16:40	77.6	↓-4.6
12/31 16:50	73.0	↓-4.6
12/31 17:00	68.2	↓-4.8	最大潮位差
12/31 17:10	63.4	↓-4.8	最大潮位差
12/31 17:20	58.6	↓-4.8	最大潮位差
12/31 17:30	53.8	↓-4.8	最大潮位差
12/31 17:40	49.1	↓-4.7
12/31 17:50	44.4	↓-4.7
12/31 18:00	39.9	↓-4.5
12/31 18:10	35.5	↓-4.4
12/31 18:20	31.3	↓-4.2
12/31 18:30	27.4	↓-3.9
12/31 18:40	23.8	↓-3.6
12/31 18:50	20.4	↓-3.4
12/31 19:00	17.4	↓-3.0
12/31 19:10	14.7	↓-2.7
12/31 19:20	12.4	↓-2.3
12/31 19:30	10.4	↓-2.0
12/31 19:40	8.8	↓-1.6
12/31 19:50	7.6	↓-1.2
12/31 20:00	6.7	↓-0.9
12/31 20:10	6.2	↓-0.5
12/31 20:20	6.0	↓-0.2	干潮
12/31 20:30	6.1	↑0.1
12/31 20:40	6.6	↑0.5
12/31 20:50	7.3	↑0.7
12/31 21:00	8.4	↑1.1
12/31 21:10	9.7	↑1.3
12/31 21:20	11.3	↑1.6
12/31 21:30	13.2	↑1.9
12/31 21:40	15.4	↑2.2
12/31 21:50	17.8	↑2.4
12/31 22:00	20.5	↑2.7
12/31 22:10	23.5	↑3.0
12/31 22:20	26.7	↑3.2
12/31 22:30	30.2	↑3.5
12/31 22:40	33.9	↑3.7
12/31 22:50	37.8	↑3.9
12/31 23:00	42.0	↑4.2
12/31 23:10	46.3	↑4.3
12/31 23:20	50.8	↑4.5
12/31 23:30	55.3	↑4.5
12/31 23:40	60.0	↑4.7
12/31 23:50	64.7	↑4.7