31 (金)	02:35	06:24	12:02	19:49
	111cm	95cm	137cm	11cm
中潮 出 07:03 入 16:12 出 03:54 入 13:36

苫小牧（北海道）2021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	93.5	↑2.5
12/31 00:10	95.8	↑2.3
12/31 00:20	97.9	↑2.1
12/31 00:30	99.9	↑2.0
12/31 00:40	101.7	↑1.8
12/31 00:50	103.3	↑1.6
12/31 01:00	104.8	↑1.5
12/31 01:10	106.1	↑1.3
12/31 01:20	107.2	↑1.1
12/31 01:30	108.2	↑1.0
12/31 01:40	109.0	↑0.8
12/31 01:50	109.7	↑0.7
12/31 02:00	110.2	↑0.5
12/31 02:10	110.6	↑0.4
12/31 02:20	110.9	↑0.3
12/31 02:30	111.0	↑0.1	満潮
12/31 02:40	111.0	0
12/31 02:50	110.8	↓-0.2
12/31 03:00	110.6	↓-0.2
12/31 03:10	110.2	↓-0.4
12/31 03:20	109.7	↓-0.5
12/31 03:30	109.0	↓-0.7
12/31 03:40	108.3	↓-0.7
12/31 03:50	107.4	↓-0.9
12/31 04:00	106.5	↓-0.9
12/31 04:10	105.5	↓-1.0
12/31 04:20	104.4	↓-1.1
12/31 04:30	103.3	↓-1.1
12/31 04:40	102.2	↓-1.1
12/31 04:50	101.1	↓-1.1
12/31 05:00	100.0	↓-1.1
12/31 05:10	99.0	↓-1.0
12/31 05:20	98.1	↓-0.9
12/31 05:30	97.2	↓-0.9
12/31 05:40	96.5	↓-0.7
12/31 05:50	95.9	↓-0.6
12/31 06:00	95.4	↓-0.5
12/31 06:10	95.1	↓-0.3
12/31 06:20	95.0	↓-0.1	干潮
12/31 06:30	95.0	0
12/31 06:40	95.2	↑0.2
12/31 06:50	95.6	↑0.4
12/31 07:00	96.1	↑0.5
12/31 07:10	96.8	↑0.7
12/31 07:20	97.7	↑0.9
12/31 07:30	98.7	↑1.0
12/31 07:40	99.8	↑1.1
12/31 07:50	101.0	↑1.2
12/31 08:00	102.4	↑1.4
12/31 08:10	103.8	↑1.4
12/31 08:20	105.3	↑1.5
12/31 08:30	106.8	↑1.5
12/31 08:40	108.4	↑1.6
12/31 08:50	110.1	↑1.7
12/31 09:00	111.8	↑1.7
12/31 09:10	113.6	↑1.8
12/31 09:20	115.4	↑1.8
12/31 09:30	117.2	↑1.8
12/31 09:40	119.0	↑1.8
12/31 09:50	120.8	↑1.8
12/31 10:00	122.6	↑1.8
12/31 10:10	124.4	↑1.8
12/31 10:20	126.1	↑1.7
12/31 10:30	127.8	↑1.7
12/31 10:40	129.3	↑1.5
12/31 10:50	130.8	↑1.5
12/31 11:00	132.2	↑1.4
12/31 11:10	133.4	↑1.2
12/31 11:20	134.4	↑1.0
12/31 11:30	135.3	↑0.9
12/31 11:40	135.9	↑0.6
12/31 11:50	136.3	↑0.4
12/31 12:00	136.5	↑0.2	満潮
12/31 12:10	136.4	↓-0.1
12/31 12:20	136.0	↓-0.4
12/31 12:30	135.4	↓-0.6
12/31 12:40	134.4	↓-1.0
12/31 12:50	133.3	↓-1.1
12/31 13:00	131.8	↓-1.5
12/31 13:10	130.1	↓-1.7
12/31 13:20	128.2	↓-1.9
12/31 13:30	126.1	↓-2.1
12/31 13:40	123.7	↓-2.4
12/31 13:50	121.2	↓-2.5
12/31 14:00	118.4	↓-2.8
12/31 14:10	115.5	↓-2.9
12/31 14:20	112.4	↓-3.1
12/31 14:30	109.2	↓-3.2
12/31 14:40	105.9	↓-3.3
12/31 14:50	102.4	↓-3.5
12/31 15:00	98.9	↓-3.5
12/31 15:10	95.2	↓-3.7
12/31 15:20	91.4	↓-3.8
12/31 15:30	87.5	↓-3.9
12/31 15:40	83.5	↓-4.0
12/31 15:50	79.5	↓-4.0
12/31 16:00	75.3	↓-4.2
12/31 16:10	71.2	↓-4.1
12/31 16:20	66.9	↓-4.3	最大潮位差
12/31 16:30	62.7	↓-4.2
12/31 16:40	58.5	↓-4.2
12/31 16:50	54.3	↓-4.2
12/31 17:00	50.1	↓-4.2
12/31 17:10	46.0	↓-4.1
12/31 17:20	42.0	↓-4.0
12/31 17:30	38.2	↓-3.8
12/31 17:40	34.5	↓-3.7
12/31 17:50	31.1	↓-3.4
12/31 18:00	27.8	↓-3.3
12/31 18:10	24.8	↓-3.0
12/31 18:20	22.0	↓-2.8
12/31 18:30	19.6	↓-2.4
12/31 18:40	17.4	↓-2.2
12/31 18:50	15.5	↓-1.9
12/31 19:00	13.9	↓-1.6
12/31 19:10	12.7	↓-1.2
12/31 19:20	11.7	↓-1.0
12/31 19:30	11.0	↓-0.7
12/31 19:40	10.7	↓-0.3	干潮
12/31 19:50	10.6	↓-0.1
12/31 20:00	10.8	↑0.2
12/31 20:10	11.2	↑0.4
12/31 20:20	12.0	↑0.8
12/31 20:30	12.9	↑0.9
12/31 20:40	14.2	↑1.3
12/31 20:50	15.6	↑1.4
12/31 21:00	17.3	↑1.7
12/31 21:10	19.2	↑1.9
12/31 21:20	21.4	↑2.2
12/31 21:30	23.8	↑2.4
12/31 21:40	26.4	↑2.6
12/31 21:50	29.2	↑2.8
12/31 22:00	32.2	↑3.0
12/31 22:10	35.4	↑3.2
12/31 22:20	38.8	↑3.4
12/31 22:30	42.4	↑3.6
12/31 22:40	46.2	↑3.8
12/31 22:50	50.0	↑3.8
12/31 23:00	54.0	↑4.0
12/31 23:10	58.0	↑4.0
12/31 23:20	62.1	↑4.1
12/31 23:30	66.3	↑4.2
12/31 23:40	70.4	↑4.1
12/31 23:50	74.4	↑4.0