31 (日)	09:56	03:17	23:44	17:20
	122cm	62cm	95cm	58cm
長潮 出 07:03 入 16:12 出 00:35 入 12:21

苫小牧（北海道）2056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	82.1	↓-1.4
12/31 00:10	80.8	↓-1.3
12/31 00:20	79.3	↓-1.5
12/31 00:30	77.9	↓-1.4
12/31 00:40	76.4	↓-1.5
12/31 00:50	75.0	↓-1.4
12/31 01:00	73.5	↓-1.5
12/31 01:10	72.1	↓-1.4
12/31 01:20	70.7	↓-1.4
12/31 01:30	69.3	↓-1.4
12/31 01:40	68.1	↓-1.2
12/31 01:50	66.9	↓-1.2
12/31 02:00	65.8	↓-1.1
12/31 02:10	64.8	↓-1.0
12/31 02:20	64.0	↓-0.8
12/31 02:30	63.2	↓-0.8
12/31 02:40	62.6	↓-0.6
12/31 02:50	62.1	↓-0.5
12/31 03:00	61.8	↓-0.3
12/31 03:10	61.7	↓-0.1	干潮
12/31 03:20	61.6	↓-0.1
12/31 03:30	61.8	↑0.2
12/31 03:40	62.0	↑0.2
12/31 03:50	62.5	↑0.5
12/31 04:00	63.1	↑0.6
12/31 04:10	63.8	↑0.7
12/31 04:20	64.7	↑0.9
12/31 04:30	65.7	↑1.0
12/31 04:40	66.9	↑1.2
12/31 04:50	68.3	↑1.4
12/31 05:00	69.7	↑1.4
12/31 05:10	71.4	↑1.7
12/31 05:20	73.1	↑1.7
12/31 05:30	75.0	↑1.9
12/31 05:40	77.0	↑2.0
12/31 05:50	79.1	↑2.1
12/31 06:00	81.3	↑2.2
12/31 06:10	83.6	↑2.3
12/31 06:20	86.0	↑2.4
12/31 06:30	88.4	↑2.4
12/31 06:40	90.9	↑2.5	最大潮位差
12/31 06:50	93.4	↑2.5	最大潮位差
12/31 07:00	95.8	↑2.4
12/31 07:10	98.3	↑2.5	最大潮位差
12/31 07:20	100.7	↑2.4
12/31 07:30	103.1	↑2.4
12/31 07:40	105.4	↑2.3
12/31 07:50	107.5	↑2.1
12/31 08:00	109.6	↑2.1
12/31 08:10	111.5	↑1.9
12/31 08:20	113.3	↑1.8
12/31 08:30	114.9	↑1.6
12/31 08:40	116.4	↑1.5
12/31 08:50	117.7	↑1.3
12/31 09:00	118.8	↑1.1
12/31 09:10	119.7	↑0.9
12/31 09:20	120.4	↑0.7
12/31 09:30	121.0	↑0.6
12/31 09:40	121.3	↑0.3
12/31 09:50	121.5	↑0.2	満潮
12/31 10:00	121.5	0
12/31 10:10	121.4	↓-0.1
12/31 10:20	121.0	↓-0.4
12/31 10:30	120.5	↓-0.5
12/31 10:40	119.9	↓-0.6
12/31 10:50	119.0	↓-0.9
12/31 11:00	118.1	↓-0.9
12/31 11:10	117.0	↓-1.1
12/31 11:20	115.7	↓-1.3
12/31 11:30	114.3	↓-1.4
12/31 11:40	112.8	↓-1.5
12/31 11:50	111.2	↓-1.6
12/31 12:00	109.5	↓-1.7
12/31 12:10	107.6	↓-1.9
12/31 12:20	105.7	↓-1.9
12/31 12:30	103.6	↓-2.1
12/31 12:40	101.5	↓-2.1
12/31 12:50	99.3	↓-2.2
12/31 13:00	97.1	↓-2.2
12/31 13:10	94.8	↓-2.3
12/31 13:20	92.5	↓-2.3
12/31 13:30	90.2	↓-2.3
12/31 13:40	87.9	↓-2.3
12/31 13:50	85.6	↓-2.3
12/31 14:00	83.3	↓-2.3
12/31 14:10	81.1	↓-2.2
12/31 14:20	78.9	↓-2.2
12/31 14:30	76.7	↓-2.2
12/31 14:40	74.7	↓-2.0
12/31 14:50	72.7	↓-2.0
12/31 15:00	70.8	↓-1.9
12/31 15:10	69.0	↓-1.8
12/31 15:20	67.3	↓-1.7
12/31 15:30	65.8	↓-1.5
12/31 15:40	64.3	↓-1.5
12/31 15:50	63.0	↓-1.3
12/31 16:00	61.8	↓-1.2
12/31 16:10	60.7	↓-1.1
12/31 16:20	59.8	↓-0.9
12/31 16:30	59.0	↓-0.8
12/31 16:40	58.4	↓-0.6
12/31 16:50	57.9	↓-0.5
12/31 17:00	57.5	↓-0.4
12/31 17:10	57.3	↓-0.2	干潮
12/31 17:20	57.2	↓-0.1	干潮
12/31 17:30	57.3	↑0.1
12/31 17:40	57.5	↑0.2
12/31 17:50	57.9	↑0.4
12/31 18:00	58.4	↑0.5
12/31 18:10	59.1	↑0.7
12/31 18:20	59.8	↑0.7
12/31 18:30	60.7	↑0.9
12/31 18:40	61.7	↑1.0
12/31 18:50	62.8	↑1.1
12/31 19:00	64.0	↑1.2
12/31 19:10	65.3	↑1.3
12/31 19:20	66.7	↑1.4
12/31 19:30	68.1	↑1.4
12/31 19:40	69.6	↑1.5
12/31 19:50	71.1	↑1.5
12/31 20:00	72.6	↑1.5
12/31 20:10	74.2	↑1.6
12/31 20:20	75.8	↑1.6
12/31 20:30	77.3	↑1.5
12/31 20:40	78.8	↑1.5
12/31 20:50	80.3	↑1.5
12/31 21:00	81.8	↑1.5
12/31 21:10	83.2	↑1.4
12/31 21:20	84.5	↑1.3
12/31 21:30	85.8	↑1.3
12/31 21:40	87.0	↑1.2
12/31 21:50	88.1	↑1.1
12/31 22:00	89.2	↑1.1
12/31 22:10	90.2	↑1.0
12/31 22:20	91.0	↑0.8
12/31 22:30	91.8	↑0.8
12/31 22:40	92.5	↑0.7
12/31 22:50	93.1	↑0.6
12/31 23:00	93.6	↑0.5
12/31 23:10	94.0	↑0.4
12/31 23:20	94.3	↑0.3
12/31 23:30	94.4	↑0.1
12/31 23:40	94.5	↑0.1	満潮
12/31 23:50	94.5	0