31 (水)	05:35	10:29	16:02	23:02
	129cm	82cm	140cm	12cm
中潮 出 07:03 入 16:11 出 18:47 入 08:09

苫小牧（北海道）2031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	20.1	↑2.4
12/31 00:10	22.9	↑2.8
12/31 00:20	25.9	↑3.0
12/31 00:30	29.2	↑3.3
12/31 00:40	32.8	↑3.6
12/31 00:50	36.6	↑3.8
12/31 01:00	40.8	↑4.2
12/31 01:10	45.2	↑4.4
12/31 01:20	49.8	↑4.6
12/31 01:30	54.6	↑4.8
12/31 01:40	59.6	↑5.0
12/31 01:50	64.6	↑5.0
12/31 02:00	69.7	↑5.1
12/31 02:10	74.9	↑5.2	最大潮位差
12/31 02:20	79.9	↑5.0
12/31 02:30	84.9	↑5.0
12/31 02:40	89.7	↑4.8
12/31 02:50	94.3	↑4.6
12/31 03:00	98.7	↑4.4
12/31 03:10	102.8	↑4.1
12/31 03:20	106.6	↑3.8
12/31 03:30	110.1	↑3.5
12/31 03:40	113.2	↑3.1
12/31 03:50	116.0	↑2.8
12/31 04:00	118.5	↑2.5
12/31 04:10	120.6	↑2.1
12/31 04:20	122.5	↑1.9
12/31 04:30	124.0	↑1.5
12/31 04:40	125.3	↑1.3
12/31 04:50	126.3	↑1.0
12/31 05:00	127.1	↑0.8
12/31 05:10	127.7	↑0.6
12/31 05:20	128.1	↑0.4
12/31 05:30	128.2	↑0.1	満潮
12/31 05:40	128.2	0
12/31 05:50	128.0	↓-0.2
12/31 06:00	127.6	↓-0.4
12/31 06:10	127.0	↓-0.6
12/31 06:20	126.3	↓-0.7
12/31 06:30	125.3	↓-1.0
12/31 06:40	124.0	↓-1.3
12/31 06:50	122.6	↓-1.4
12/31 07:00	121.0	↓-1.6
12/31 07:10	119.1	↓-1.9
12/31 07:20	117.0	↓-2.1
12/31 07:30	114.8	↓-2.2
12/31 07:40	112.4	↓-2.4
12/31 07:50	109.8	↓-2.6
12/31 08:00	107.2	↓-2.6
12/31 08:10	104.5	↓-2.7
12/31 08:20	101.8	↓-2.7
12/31 08:30	99.2	↓-2.6
12/31 08:40	96.6	↓-2.6
12/31 08:50	94.1	↓-2.5
12/31 09:00	91.8	↓-2.3
12/31 09:10	89.7	↓-2.1
12/31 09:20	87.8	↓-1.9
12/31 09:30	86.1	↓-1.7
12/31 09:40	84.8	↓-1.3
12/31 09:50	83.7	↓-1.1
12/31 10:00	82.8	↓-0.9
12/31 10:10	82.3	↓-0.5
12/31 10:20	81.9	↓-0.4	干潮
12/31 10:30	81.9	0
12/31 10:40	82.0	↑0.1
12/31 10:50	82.4	↑0.4
12/31 11:00	82.9	↑0.5
12/31 11:10	83.6	↑0.7
12/31 11:20	84.5	↑0.9
12/31 11:30	85.5	↑1.0
12/31 11:40	86.7	↑1.2
12/31 11:50	87.9	↑1.2
12/31 12:00	89.3	↑1.4
12/31 12:10	90.9	↑1.6
12/31 12:20	92.5	↑1.6
12/31 12:30	94.4	↑1.9
12/31 12:40	96.3	↑1.9
12/31 12:50	98.4	↑2.1
12/31 13:00	100.7	↑2.3
12/31 13:10	103.1	↑2.4
12/31 13:20	105.7	↑2.6
12/31 13:30	108.4	↑2.7
12/31 13:40	111.2	↑2.8
12/31 13:50	114.0	↑2.8
12/31 14:00	116.9	↑2.9
12/31 14:10	119.9	↑3.0
12/31 14:20	122.7	↑2.8
12/31 14:30	125.5	↑2.8
12/31 14:40	128.2	↑2.7
12/31 14:50	130.7	↑2.5
12/31 15:00	132.9	↑2.2
12/31 15:10	134.9	↑2.0
12/31 15:20	136.6	↑1.7
12/31 15:30	137.9	↑1.3
12/31 15:40	138.9	↑1.0
12/31 15:50	139.4	↑0.5
12/31 16:00	139.7	↑0.3	満潮
12/31 16:10	139.5	↓-0.2
12/31 16:20	138.9	↓-0.6
12/31 16:30	138.1	↓-0.8
12/31 16:40	136.8	↓-1.3
12/31 16:50	135.3	↓-1.5
12/31 17:00	133.4	↓-1.9
12/31 17:10	131.4	↓-2.0
12/31 17:20	129.0	↓-2.4
12/31 17:30	126.5	↓-2.5
12/31 17:40	123.7	↓-2.8
12/31 17:50	120.8	↓-2.9
12/31 18:00	117.7	↓-3.1
12/31 18:10	114.5	↓-3.2
12/31 18:20	111.1	↓-3.4
12/31 18:30	107.5	↓-3.6
12/31 18:40	103.7	↓-3.8
12/31 18:50	99.8	↓-3.9
12/31 19:00	95.8	↓-4.0
12/31 19:10	91.5	↓-4.3
12/31 19:20	87.2	↓-4.3
12/31 19:30	82.6	↓-4.6
12/31 19:40	78.0	↓-4.6
12/31 19:50	73.2	↓-4.8
12/31 20:00	68.3	↓-4.9
12/31 20:10	63.4	↓-4.9
12/31 20:20	58.5	↓-4.9
12/31 20:30	53.6	↓-4.9
12/31 20:40	48.8	↓-4.8
12/31 20:50	44.2	↓-4.6
12/31 21:00	39.7	↓-4.5
12/31 21:10	35.5	↓-4.2
12/31 21:20	31.5	↓-4.0
12/31 21:30	27.8	↓-3.7
12/31 21:40	24.5	↓-3.3
12/31 21:50	21.5	↓-3.0
12/31 22:00	19.0	↓-2.5
12/31 22:10	16.8	↓-2.2
12/31 22:20	15.1	↓-1.7
12/31 22:30	13.7	↓-1.4
12/31 22:40	12.8	↓-0.9
12/31 22:50	12.2	↓-0.6
12/31 23:00	12.0	↓-0.2	干潮
12/31 23:10	12.1	↑0.1
12/31 23:20	12.6	↑0.5
12/31 23:30	13.3	↑0.7
12/31 23:40	14.4	↑1.1
12/31 23:50	15.7	↑1.3