31 (木)	05:26	09:40	15:08	22:29
	128cm	97cm	145cm	-4cm
大潮 出 07:03 入 16:12 出 17:05 入 07:57

苫小牧（北海道）2020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	22.6	↑3.6
12/31 00:10	26.4	↑3.8
12/31 00:20	30.5	↑4.1
12/31 00:30	34.9	↑4.4
12/31 00:40	39.4	↑4.5
12/31 00:50	44.2	↑4.8
12/31 01:00	49.1	↑4.9
12/31 01:10	54.2	↑5.1
12/31 01:20	59.4	↑5.2
12/31 01:30	64.6	↑5.2
12/31 01:40	69.8	↑5.2
12/31 01:50	74.9	↑5.1
12/31 02:00	80.0	↑5.1
12/31 02:10	84.9	↑4.9
12/31 02:20	89.6	↑4.7
12/31 02:30	94.1	↑4.5
12/31 02:40	98.3	↑4.2
12/31 02:50	102.3	↑4.0
12/31 03:00	105.9	↑3.6
12/31 03:10	109.2	↑3.3
12/31 03:20	112.2	↑3.0
12/31 03:30	114.9	↑2.7
12/31 03:40	117.3	↑2.4
12/31 03:50	119.4	↑2.1
12/31 04:00	121.2	↑1.8
12/31 04:10	122.8	↑1.6
12/31 04:20	124.1	↑1.3
12/31 04:30	125.2	↑1.1
12/31 04:40	126.1	↑0.9
12/31 04:50	126.8	↑0.7
12/31 05:00	127.3	↑0.5
12/31 05:10	127.7	↑0.4
12/31 05:20	127.8	↑0.1	満潮
12/31 05:30	127.8	0
12/31 05:40	127.7	↓-0.1
12/31 05:50	127.3	↓-0.4
12/31 06:00	126.8	↓-0.5
12/31 06:10	126.0	↓-0.8
12/31 06:20	125.1	↓-0.9
12/31 06:30	124.0	↓-1.1
12/31 06:40	122.7	↓-1.3
12/31 06:50	121.2	↓-1.5
12/31 07:00	119.5	↓-1.7
12/31 07:10	117.8	↓-1.7
12/31 07:20	115.9	↓-1.9
12/31 07:30	113.9	↓-2.0
12/31 07:40	111.9	↓-2.0
12/31 07:50	109.9	↓-2.0
12/31 08:00	107.9	↓-2.0
12/31 08:10	106.0	↓-1.9
12/31 08:20	104.2	↓-1.8
12/31 08:30	102.6	↓-1.6
12/31 08:40	101.1	↓-1.5
12/31 08:50	99.8	↓-1.3
12/31 09:00	98.8	↓-1.0
12/31 09:10	98.0	↓-0.8
12/31 09:20	97.4	↓-0.6
12/31 09:30	97.1	↓-0.3	干潮
12/31 09:40	97.0	↓-0.1	干潮
12/31 09:50	97.1	↑0.1
12/31 10:00	97.4	↑0.3
12/31 10:10	98.0	↑0.6
12/31 10:20	98.7	↑0.7
12/31 10:30	99.5	↑0.8
12/31 10:40	100.5	↑1.0
12/31 10:50	101.6	↑1.1
12/31 11:00	102.8	↑1.2
12/31 11:10	104.1	↑1.3
12/31 11:20	105.5	↑1.4
12/31 11:30	106.9	↑1.4
12/31 11:40	108.5	↑1.6
12/31 11:50	110.1	↑1.6
12/31 12:00	111.8	↑1.7
12/31 12:10	113.6	↑1.8
12/31 12:20	115.5	↑1.9
12/31 12:30	117.5	↑2.0
12/31 12:40	119.6	↑2.1
12/31 12:50	121.7	↑2.1
12/31 13:00	124.0	↑2.3
12/31 13:10	126.2	↑2.2
12/31 13:20	128.5	↑2.3
12/31 13:30	130.8	↑2.3
12/31 13:40	133.1	↑2.3
12/31 13:50	135.2	↑2.1
12/31 14:00	137.2	↑2.0
12/31 14:10	139.1	↑1.9
12/31 14:20	140.8	↑1.7
12/31 14:30	142.2	↑1.4
12/31 14:40	143.3	↑1.1
12/31 14:50	144.1	↑0.8
12/31 15:00	144.6	↑0.5	満潮
12/31 15:10	144.6	0
12/31 15:20	144.4	↓-0.2
12/31 15:30	143.7	↓-0.7
12/31 15:40	142.6	↓-1.1
12/31 15:50	141.2	↓-1.4
12/31 16:00	139.4	↓-1.8
12/31 16:10	137.3	↓-2.1
12/31 16:20	134.9	↓-2.4
12/31 16:30	132.2	↓-2.7
12/31 16:40	129.3	↓-2.9
12/31 16:50	126.1	↓-3.2
12/31 17:00	122.7	↓-3.4
12/31 17:10	119.1	↓-3.6
12/31 17:20	115.3	↓-3.8
12/31 17:30	111.4	↓-3.9
12/31 17:40	107.3	↓-4.1
12/31 17:50	103.1	↓-4.2
12/31 18:00	98.8	↓-4.3
12/31 18:10	94.3	↓-4.5
12/31 18:20	89.7	↓-4.6
12/31 18:30	85.0	↓-4.7
12/31 18:40	80.1	↓-4.9
12/31 18:50	75.1	↓-5.0
12/31 19:00	70.1	↓-5.0
12/31 19:10	64.9	↓-5.2
12/31 19:20	59.6	↓-5.3	最大潮位差
12/31 19:30	54.4	↓-5.2
12/31 19:40	49.1	↓-5.3	最大潮位差
12/31 19:50	43.8	↓-5.3	最大潮位差
12/31 20:00	38.6	↓-5.2
12/31 20:10	33.6	↓-5.0
12/31 20:20	28.7	↓-4.9
12/31 20:30	24.0	↓-4.7
12/31 20:40	19.6	↓-4.4
12/31 20:50	15.5	↓-4.1
12/31 21:00	11.7	↓-3.8
12/31 21:10	8.3	↓-3.4
12/31 21:20	5.3	↓-3.0
12/31 21:30	2.7	↓-2.6
12/31 21:40	0.5	↓-2.2
12/31 21:50	-1.3	↓-1.8
12/31 22:00	-2.6	↓-1.3
12/31 22:10	-3.5	↓-0.9
12/31 22:20	-4.0	↓-0.5	干潮
12/31 22:30	-4.2	↓-0.2
12/31 22:40	-3.9	↑0.3
12/31 22:50	-3.3	↑0.6
12/31 23:00	-2.4	↑0.9
12/31 23:10	-1.2	↑1.2
12/31 23:20	0.4	↑1.6
12/31 23:30	2.2	↑1.8
12/31 23:40	4.3	↑2.1
12/31 23:50	6.6	↑2.3