21 (木)	09:21	02:49	21:32	15:39
	83cm	53cm	77cm	59cm
小潮 出 06:52 入 15:46 出 12:04 入 00:11

コイセボイ（北海道）2023年12月21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
12/21 00:00	65.1	↓-1.3	最大潮位差
12/21 00:10	63.8	↓-1.3	最大潮位差
12/21 00:20	62.5	↓-1.3	最大潮位差
12/21 00:30	61.3	↓-1.2
12/21 00:40	60.2	↓-1.1
12/21 00:50	59.1	↓-1.1
12/21 01:00	58.1	↓-1.0
12/21 01:10	57.1	↓-1.0
12/21 01:20	56.2	↓-0.9
12/21 01:30	55.4	↓-0.8
12/21 01:40	54.7	↓-0.7
12/21 01:50	54.1	↓-0.6
12/21 02:00	53.5	↓-0.6
12/21 02:10	53.1	↓-0.4
12/21 02:20	52.8	↓-0.3
12/21 02:30	52.5	↓-0.3
12/21 02:40	52.4	↓-0.1	干潮
12/21 02:50	52.4	0
12/21 03:00	52.4	0
12/21 03:10	52.6	↑0.2
12/21 03:20	52.9	↑0.3
12/21 03:30	53.2	↑0.3
12/21 03:40	53.7	↑0.5
12/21 03:50	54.3	↑0.6
12/21 04:00	54.9	↑0.6
12/21 04:10	55.6	↑0.7
12/21 04:20	56.4	↑0.8
12/21 04:30	57.3	↑0.9
12/21 04:40	58.2	↑0.9
12/21 04:50	59.2	↑1.0
12/21 05:00	60.2	↑1.0
12/21 05:10	61.3	↑1.1
12/21 05:20	62.4	↑1.1
12/21 05:30	63.6	↑1.2
12/21 05:40	64.8	↑1.2
12/21 05:50	66.0	↑1.2
12/21 06:00	67.2	↑1.2
12/21 06:10	68.4	↑1.2
12/21 06:20	69.6	↑1.2
12/21 06:30	70.8	↑1.2
12/21 06:40	71.9	↑1.1
12/21 06:50	73.0	↑1.1
12/21 07:00	74.1	↑1.1
12/21 07:10	75.2	↑1.1
12/21 07:20	76.2	↑1.0
12/21 07:30	77.1	↑0.9
12/21 07:40	78.0	↑0.9
12/21 07:50	78.8	↑0.8
12/21 08:00	79.5	↑0.7
12/21 08:10	80.2	↑0.7
12/21 08:20	80.7	↑0.5
12/21 08:30	81.2	↑0.5
12/21 08:40	81.6	↑0.4
12/21 08:50	82.0	↑0.4
12/21 09:00	82.2	↑0.2
12/21 09:10	82.3	↑0.1
12/21 09:20	82.4	↑0.1	満潮
12/21 09:30	82.3	↓-0.1
12/21 09:40	82.2	↓-0.1
12/21 09:50	82.0	↓-0.2
12/21 10:00	81.7	↓-0.3
12/21 10:10	81.3	↓-0.4
12/21 10:20	80.8	↓-0.5
12/21 10:30	80.3	↓-0.5
12/21 10:40	79.7	↓-0.6
12/21 10:50	79.0	↓-0.7
12/21 11:00	78.2	↓-0.8
12/21 11:10	77.4	↓-0.8
12/21 11:20	76.6	↓-0.8
12/21 11:30	75.7	↓-0.9
12/21 11:40	74.8	↓-0.9
12/21 11:50	73.8	↓-1.0
12/21 12:00	72.8	↓-1.0
12/21 12:10	71.8	↓-1.0
12/21 12:20	70.8	↓-1.0
12/21 12:30	69.8	↓-1.0
12/21 12:40	68.8	↓-1.0
12/21 12:50	67.8	↓-1.0
12/21 13:00	66.8	↓-1.0
12/21 13:10	65.9	↓-0.9
12/21 13:20	65.0	↓-0.9
12/21 13:30	64.1	↓-0.9
12/21 13:40	63.2	↓-0.9
12/21 13:50	62.5	↓-0.7
12/21 14:00	61.7	↓-0.8
12/21 14:10	61.0	↓-0.7
12/21 14:20	60.4	↓-0.6
12/21 14:30	59.9	↓-0.5
12/21 14:40	59.4	↓-0.5
12/21 14:50	59.0	↓-0.4
12/21 15:00	58.6	↓-0.4
12/21 15:10	58.4	↓-0.2
12/21 15:20	58.2	↓-0.2
12/21 15:30	58.1	↓-0.1	干潮
12/21 15:40	58.1	0
12/21 15:50	58.1	0
12/21 16:00	58.3	↑0.2
12/21 16:10	58.5	↑0.2
12/21 16:20	58.7	↑0.2
12/21 16:30	59.1	↑0.4
12/21 16:40	59.5	↑0.4
12/21 16:50	60.0	↑0.5
12/21 17:00	60.5	↑0.5
12/21 17:10	61.1	↑0.6
12/21 17:20	61.7	↑0.6
12/21 17:30	62.4	↑0.7
12/21 17:40	63.1	↑0.7
12/21 17:50	63.8	↑0.7
12/21 18:00	64.6	↑0.8
12/21 18:10	65.4	↑0.8
12/21 18:20	66.2	↑0.8
12/21 18:30	67.0	↑0.8
12/21 18:40	67.9	↑0.9
12/21 18:50	68.7	↑0.8
12/21 19:00	69.5	↑0.8
12/21 19:10	70.3	↑0.8
12/21 19:20	71.0	↑0.7
12/21 19:30	71.8	↑0.8
12/21 19:40	72.5	↑0.7
12/21 19:50	73.1	↑0.6
12/21 20:00	73.7	↑0.6
12/21 20:10	74.3	↑0.6
12/21 20:20	74.8	↑0.5
12/21 20:30	75.2	↑0.4
12/21 20:40	75.6	↑0.4
12/21 20:50	75.9	↑0.3
12/21 21:00	76.2	↑0.3
12/21 21:10	76.4	↑0.2
12/21 21:20	76.5	↑0.1
12/21 21:30	76.5	0	満潮
12/21 21:40	76.5	0
12/21 21:50	76.4	↓-0.1
12/21 22:00	76.2	↓-0.2
12/21 22:10	76.0	↓-0.2
12/21 22:20	75.7	↓-0.3
12/21 22:30	75.3	↓-0.4
12/21 22:40	74.9	↓-0.4
12/21 22:50	74.4	↓-0.5
12/21 23:00	73.8	↓-0.6
12/21 23:10	73.3	↓-0.5
12/21 23:20	72.6	↓-0.7
12/21 23:30	71.9	↓-0.7
12/21 23:40	71.2	↓-0.7
12/21 23:50	70.5	↓-0.7