31 (月)	05:44	10:43	16:16	23:15
	128cm	83cm	140cm	9cm
中潮 出 07:03 入 16:12 出 19:09 入 08:21

苫小牧（北海道）2012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	14.8	↑2.2
12/31 00:10	17.2	↑2.4
12/31 00:20	19.9	↑2.7
12/31 00:30	22.9	↑3.0
12/31 00:40	26.1	↑3.2
12/31 00:50	29.6	↑3.5
12/31 01:00	33.3	↑3.7
12/31 01:10	37.3	↑4.0
12/31 01:20	41.5	↑4.2
12/31 01:30	46.0	↑4.5
12/31 01:40	50.6	↑4.6
12/31 01:50	55.5	↑4.9
12/31 02:00	60.5	↑5.0
12/31 02:10	65.5	↑5.0
12/31 02:20	70.7	↑5.2	最大潮位差
12/31 02:30	75.8	↑5.1
12/31 02:40	81.0	↑5.2	最大潮位差
12/31 02:50	86.0	↑5.0
12/31 03:00	90.8	↑4.8
12/31 03:10	95.5	↑4.7
12/31 03:20	99.9	↑4.4
12/31 03:30	104.1	↑4.2
12/31 03:40	107.9	↑3.8
12/31 03:50	111.4	↑3.5
12/31 04:00	114.5	↑3.1
12/31 04:10	117.3	↑2.8
12/31 04:20	119.7	↑2.4
12/31 04:30	121.8	↑2.1
12/31 04:40	123.5	↑1.7
12/31 04:50	124.9	↑1.4
12/31 05:00	126.0	↑1.1
12/31 05:10	126.9	↑0.9
12/31 05:20	127.5	↑0.6
12/31 05:30	127.8	↑0.3
12/31 05:40	128.0	↑0.2	満潮
12/31 05:50	127.9	↓-0.1
12/31 06:00	127.7	↓-0.2
12/31 06:10	127.3	↓-0.4
12/31 06:20	126.7	↓-0.6
12/31 06:30	126.0	↓-0.7
12/31 06:40	125.1	↓-0.9
12/31 06:50	124.0	↓-1.1
12/31 07:00	122.7	↓-1.3
12/31 07:10	121.2	↓-1.5
12/31 07:20	119.6	↓-1.6
12/31 07:30	117.8	↓-1.8
12/31 07:40	115.8	↓-2.0
12/31 07:50	113.6	↓-2.2
12/31 08:00	111.3	↓-2.3
12/31 08:10	108.8	↓-2.5
12/31 08:20	106.3	↓-2.5
12/31 08:30	103.7	↓-2.6
12/31 08:40	101.1	↓-2.6
12/31 08:50	98.5	↓-2.6
12/31 09:00	96.0	↓-2.5
12/31 09:10	93.6	↓-2.4
12/31 09:20	91.4	↓-2.2
12/31 09:30	89.3	↓-2.1
12/31 09:40	87.5	↓-1.8
12/31 09:50	86.0	↓-1.5
12/31 10:00	84.7	↓-1.3
12/31 10:10	83.6	↓-1.1
12/31 10:20	82.9	↓-0.7
12/31 10:30	82.4	↓-0.5
12/31 10:40	82.3	↓-0.1	干潮
12/31 10:50	82.3	0
12/31 11:00	82.7	↑0.4
12/31 11:10	83.2	↑0.5
12/31 11:20	83.9	↑0.7
12/31 11:30	84.9	↑1.0
12/31 11:40	85.9	↑1.0
12/31 11:50	87.2	↑1.3
12/31 12:00	88.5	↑1.3
12/31 12:10	89.9	↑1.4
12/31 12:20	91.5	↑1.6
12/31 12:30	93.2	↑1.7
12/31 12:40	94.9	↑1.7
12/31 12:50	96.8	↑1.9
12/31 13:00	98.8	↑2.0
12/31 13:10	100.9	↑2.1
12/31 13:20	103.1	↑2.2
12/31 13:30	105.5	↑2.4
12/31 13:40	107.9	↑2.4
12/31 13:50	110.5	↑2.6
12/31 14:00	113.1	↑2.6
12/31 14:10	115.8	↑2.7
12/31 14:20	118.6	↑2.8
12/31 14:30	121.3	↑2.7
12/31 14:40	124.0	↑2.7
12/31 14:50	126.6	↑2.6
12/31 15:00	129.0	↑2.4
12/31 15:10	131.3	↑2.3
12/31 15:20	133.4	↑2.1
12/31 15:30	135.2	↑1.8
12/31 15:40	136.6	↑1.4
12/31 15:50	137.8	↑1.2
12/31 16:00	138.6	↑0.8
12/31 16:10	139.0	↑0.4	満潮
12/31 16:20	139.0	0
12/31 16:30	138.6	↓-0.4
12/31 16:40	137.8	↓-0.8
12/31 16:50	136.6	↓-1.2
12/31 17:00	135.1	↓-1.5
12/31 17:10	133.2	↓-1.9
12/31 17:20	131.1	↓-2.1
12/31 17:30	128.6	↓-2.5
12/31 17:40	126.0	↓-2.6
12/31 17:50	123.0	↓-3.0
12/31 18:00	119.9	↓-3.1
12/31 18:10	116.7	↓-3.2
12/31 18:20	113.2	↓-3.5
12/31 18:30	109.7	↓-3.5
12/31 18:40	106.0	↓-3.7
12/31 18:50	102.2	↓-3.8
12/31 19:00	98.2	↓-4.0
12/31 19:10	94.1	↓-4.1
12/31 19:20	89.9	↓-4.2
12/31 19:30	85.6	↓-4.3
12/31 19:40	81.2	↓-4.4
12/31 19:50	76.7	↓-4.5
12/31 20:00	72.0	↓-4.7
12/31 20:10	67.3	↓-4.7
12/31 20:20	62.6	↓-4.7
12/31 20:30	57.8	↓-4.8
12/31 20:40	53.0	↓-4.8
12/31 20:50	48.2	↓-4.8
12/31 21:00	43.6	↓-4.6
12/31 21:10	39.1	↓-4.5
12/31 21:20	34.7	↓-4.4
12/31 21:30	30.6	↓-4.1
12/31 21:40	26.8	↓-3.8
12/31 21:50	23.2	↓-3.6
12/31 22:00	20.0	↓-3.2
12/31 22:10	17.2	↓-2.8
12/31 22:20	14.8	↓-2.4
12/31 22:30	12.8	↓-2.0
12/31 22:40	11.3	↓-1.5
12/31 22:50	10.1	↓-1.2
12/31 23:00	9.4	↓-0.7
12/31 23:10	9.0	↓-0.4	干潮
12/31 23:20	9.1	↑0.1
12/31 23:30	9.5	↑0.4
12/31 23:40	10.2	↑0.7
12/31 23:50	11.3	↑1.1