31 (土)	07:23	00:39	18:59	13:46
	127cm	41cm	108cm	67cm
小潮 出 07:03 入 16:11 出 10:25 入 23:15

苫小牧（北海道）2011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	42.8	↓-1.2
12/31 00:10	41.8	↓-1.0
12/31 00:20	41.2	↓-0.6
12/31 00:30	40.8	↓-0.4	干潮
12/31 00:40	40.7	↓-0.1
12/31 00:50	40.9	↑0.2
12/31 01:00	41.4	↑0.5
12/31 01:10	42.1	↑0.7
12/31 01:20	42.9	↑0.8
12/31 01:30	44.0	↑1.1
12/31 01:40	45.3	↑1.3
12/31 01:50	46.8	↑1.5
12/31 02:00	48.4	↑1.6
12/31 02:10	50.2	↑1.8
12/31 02:20	52.1	↑1.9
12/31 02:30	54.2	↑2.1
12/31 02:40	56.5	↑2.3
12/31 02:50	58.9	↑2.4
12/31 03:00	61.5	↑2.6
12/31 03:10	64.2	↑2.7
12/31 03:20	67.1	↑2.9
12/31 03:30	70.2	↑3.1
12/31 03:40	73.4	↑3.2
12/31 03:50	76.7	↑3.3
12/31 04:00	80.2	↑3.5
12/31 04:10	83.7	↑3.5
12/31 04:20	87.3	↑3.6	最大潮位差
12/31 04:30	90.9	↑3.6	最大潮位差
12/31 04:40	94.5	↑3.6	最大潮位差
12/31 04:50	98.1	↑3.6	最大潮位差
12/31 05:00	101.5	↑3.4
12/31 05:10	104.8	↑3.3
12/31 05:20	108.0	↑3.2
12/31 05:30	111.0	↑3.0
12/31 05:40	113.7	↑2.7
12/31 05:50	116.2	↑2.5
12/31 06:00	118.4	↑2.2
12/31 06:10	120.4	↑2.0
12/31 06:20	122.0	↑1.6
12/31 06:30	123.4	↑1.4
12/31 06:40	124.5	↑1.1
12/31 06:50	125.3	↑0.8
12/31 07:00	125.9	↑0.6
12/31 07:10	126.3	↑0.4
12/31 07:20	126.4	↑0.1	満潮
12/31 07:30	126.3	↓-0.1
12/31 07:40	126.1	↓-0.2
12/31 07:50	125.7	↓-0.4
12/31 08:00	125.1	↓-0.6
12/31 08:10	124.4	↓-0.7
12/31 08:20	123.5	↓-0.9
12/31 08:30	122.5	↓-1.0
12/31 08:40	121.4	↓-1.1
12/31 08:50	120.1	↓-1.3
12/31 09:00	118.7	↓-1.4
12/31 09:10	117.2	↓-1.5
12/31 09:20	115.4	↓-1.8
12/31 09:30	113.6	↓-1.8
12/31 09:40	111.5	↓-2.1
12/31 09:50	109.4	↓-2.1
12/31 10:00	107.0	↓-2.4
12/31 10:10	104.6	↓-2.4
12/31 10:20	102.0	↓-2.6
12/31 10:30	99.3	↓-2.7
12/31 10:40	96.6	↓-2.7
12/31 10:50	93.9	↓-2.7
12/31 11:00	91.1	↓-2.8
12/31 11:10	88.3	↓-2.8
12/31 11:20	85.7	↓-2.6
12/31 11:30	83.1	↓-2.6
12/31 11:40	80.6	↓-2.5
12/31 11:50	78.3	↓-2.3
12/31 12:00	76.2	↓-2.1
12/31 12:10	74.3	↓-1.9
12/31 12:20	72.5	↓-1.8
12/31 12:30	71.0	↓-1.5
12/31 12:40	69.7	↓-1.3
12/31 12:50	68.6	↓-1.1
12/31 13:00	67.7	↓-0.9
12/31 13:10	67.0	↓-0.7
12/31 13:20	66.5	↓-0.5
12/31 13:30	66.2	↓-0.3
12/31 13:40	66.0	↓-0.2	干潮
12/31 13:50	66.0	0
12/31 14:00	66.2	↑0.2
12/31 14:10	66.5	↑0.3
12/31 14:20	66.9	↑0.4
12/31 14:30	67.5	↑0.6
12/31 14:40	68.2	↑0.7
12/31 14:50	69.0	↑0.8
12/31 15:00	70.0	↑1.0
12/31 15:10	71.1	↑1.1
12/31 15:20	72.4	↑1.3
12/31 15:30	73.8	↑1.4
12/31 15:40	75.4	↑1.6
12/31 15:50	77.1	↑1.7
12/31 16:00	79.0	↑1.9
12/31 16:10	81.0	↑2.0
12/31 16:20	83.0	↑2.0
12/31 16:30	85.2	↑2.2
12/31 16:40	87.5	↑2.3
12/31 16:50	89.7	↑2.2
12/31 17:00	92.0	↑2.3
12/31 17:10	94.2	↑2.2
12/31 17:20	96.3	↑2.1
12/31 17:30	98.3	↑2.0
12/31 17:40	100.2	↑1.9
12/31 17:50	101.9	↑1.7
12/31 18:00	103.4	↑1.5
12/31 18:10	104.7	↑1.3
12/31 18:20	105.8	↑1.1
12/31 18:30	106.6	↑0.8
12/31 18:40	107.1	↑0.5
12/31 18:50	107.4	↑0.3	満潮
12/31 19:00	107.5	↑0.1
12/31 19:10	107.3	↓-0.2
12/31 19:20	107.0	↓-0.3
12/31 19:30	106.4	↓-0.6
12/31 19:40	105.6	↓-0.8
12/31 19:50	104.7	↓-0.9
12/31 20:00	103.7	↓-1.0
12/31 20:10	102.5	↓-1.2
12/31 20:20	101.2	↓-1.3
12/31 20:30	99.8	↓-1.4
12/31 20:40	98.4	↓-1.4
12/31 20:50	96.9	↓-1.5
12/31 21:00	95.2	↓-1.7
12/31 21:10	93.6	↓-1.6
12/31 21:20	91.8	↓-1.8
12/31 21:30	90.0	↓-1.8
12/31 21:40	88.0	↓-2.0
12/31 21:50	86.0	↓-2.0
12/31 22:00	84.0	↓-2.0
12/31 22:10	81.9	↓-2.1
12/31 22:20	79.7	↓-2.2
12/31 22:30	77.4	↓-2.3
12/31 22:40	75.2	↓-2.2
12/31 22:50	72.9	↓-2.3
12/31 23:00	70.6	↓-2.3
12/31 23:10	68.4	↓-2.2
12/31 23:20	66.2	↓-2.2
12/31 23:30	64.1	↓-2.1
12/31 23:40	62.2	↓-1.9
12/31 23:50	60.4	↓-1.8