21 (金)	15:30	23:44	-	-
	134cm	16cm	-	-
中潮 出 06:53 入 15:47 出 17:58 入 09:09

コイセボイ（北海道）2040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	14.9	↑1.0
12/21 00:10	16.0	↑1.1
12/21 00:20	17.2	↑1.2
12/21 00:30	18.6	↑1.4
12/21 00:40	20.1	↑1.5
12/21 00:50	21.7	↑1.6
12/21 01:00	23.3	↑1.6
12/21 01:10	25.1	↑1.8
12/21 01:20	26.9	↑1.8
12/21 01:30	28.8	↑1.9
12/21 01:40	30.7	↑1.9
12/21 01:50	32.6	↑1.9
12/21 02:00	34.5	↑1.9
12/21 02:10	36.4	↑1.9
12/21 02:20	38.3	↑1.9
12/21 02:30	40.2	↑1.9
12/21 02:40	42.1	↑1.9
12/21 02:50	43.9	↑1.8
12/21 03:00	45.6	↑1.7
12/21 03:10	47.3	↑1.7
12/21 03:20	48.8	↑1.5
12/21 03:30	50.4	↑1.6
12/21 03:40	51.8	↑1.4
12/21 03:50	53.1	↑1.3
12/21 04:00	54.3	↑1.2
12/21 04:10	55.5	↑1.2
12/21 04:20	56.5	↑1.0
12/21 04:30	57.4	↑0.9
12/21 04:40	58.3	↑0.9
12/21 04:50	59.0	↑0.7
12/21 05:00	59.6	↑0.6
12/21 05:10	60.2	↑0.6
12/21 05:20	60.7	↑0.5
12/21 05:30	61.0	↑0.3
12/21 05:40	61.3	↑0.3
12/21 05:50	61.6	↑0.3
12/21 06:00	61.8	↑0.2
12/21 06:10	61.9	↑0.1
12/21 06:20	62.0	↑0.1
12/21 06:30	62.0	0
12/21 06:40	62.1	↑0.1
12/21 06:50	62.1	0
12/21 07:00	62.1	0
12/21 07:10	62.1	0
12/21 07:20	62.2	↑0.1
12/21 07:30	62.2	0
12/21 07:40	62.3	↑0.1
12/21 07:50	62.5	↑0.2
12/21 08:00	62.7	↑0.2
12/21 08:10	63.0	↑0.3
12/21 08:20	63.4	↑0.4
12/21 08:30	63.8	↑0.4
12/21 08:40	64.4	↑0.6
12/21 08:50	65.0	↑0.6
12/21 09:00	65.8	↑0.8
12/21 09:10	66.6	↑0.8
12/21 09:20	67.6	↑1.0
12/21 09:30	68.7	↑1.1
12/21 09:40	69.9	↑1.2
12/21 09:50	71.2	↑1.3
12/21 10:00	72.7	↑1.5
12/21 10:10	74.2	↑1.5
12/21 10:20	75.9	↑1.7
12/21 10:30	77.7	↑1.8
12/21 10:40	79.6	↑1.9
12/21 10:50	81.6	↑2.0
12/21 11:00	83.7	↑2.1
12/21 11:10	85.9	↑2.2
12/21 11:20	88.1	↑2.2
12/21 11:30	90.4	↑2.3
12/21 11:40	92.8	↑2.4
12/21 11:50	95.2	↑2.4
12/21 12:00	97.7	↑2.5
12/21 12:10	100.2	↑2.5
12/21 12:20	102.7	↑2.5
12/21 12:30	105.2	↑2.5
12/21 12:40	107.6	↑2.4
12/21 12:50	110.0	↑2.4
12/21 13:00	112.4	↑2.4
12/21 13:10	114.7	↑2.3
12/21 13:20	117.0	↑2.3
12/21 13:30	119.1	↑2.1
12/21 13:40	121.2	↑2.1
12/21 13:50	123.1	↑1.9
12/21 14:00	124.9	↑1.8
12/21 14:10	126.5	↑1.6
12/21 14:20	128.0	↑1.5
12/21 14:30	129.3	↑1.3
12/21 14:40	130.4	↑1.1
12/21 14:50	131.4	↑1.0
12/21 15:00	132.1	↑0.7
12/21 15:10	132.6	↑0.5
12/21 15:20	132.9	↑0.3	満潮
12/21 15:30	133.0	↑0.1	満潮
12/21 15:40	132.9	↓-0.1
12/21 15:50	132.5	↓-0.4
12/21 16:00	131.9	↓-0.6
12/21 16:10	131.1	↓-0.8
12/21 16:20	130.0	↓-1.1
12/21 16:30	128.7	↓-1.3
12/21 16:40	127.2	↓-1.5
12/21 16:50	125.4	↓-1.8
12/21 17:00	123.5	↓-1.9
12/21 17:10	121.3	↓-2.2
12/21 17:20	118.9	↓-2.4
12/21 17:30	116.4	↓-2.5
12/21 17:40	113.6	↓-2.8
12/21 17:50	110.7	↓-2.9
12/21 18:00	107.6	↓-3.1
12/21 18:10	104.4	↓-3.2
12/21 18:20	101.0	↓-3.4
12/21 18:30	97.5	↓-3.5
12/21 18:40	93.9	↓-3.6
12/21 18:50	90.3	↓-3.6
12/21 19:00	86.5	↓-3.8
12/21 19:10	82.7	↓-3.8
12/21 19:20	78.9	↓-3.8
12/21 19:30	75.1	↓-3.8
12/21 19:40	71.2	↓-3.9	最大潮位差
12/21 19:50	67.4	↓-3.8
12/21 20:00	63.6	↓-3.8
12/21 20:10	59.9	↓-3.7
12/21 20:20	56.2	↓-3.7
12/21 20:30	52.6	↓-3.6
12/21 20:40	49.1	↓-3.5
12/21 20:50	45.7	↓-3.4
12/21 21:00	42.5	↓-3.2
12/21 21:10	39.4	↓-3.1
12/21 21:20	36.4	↓-3.0
12/21 21:30	33.6	↓-2.8
12/21 21:40	31.0	↓-2.6
12/21 21:50	28.6	↓-2.4
12/21 22:00	26.3	↓-2.3
12/21 22:10	24.3	↓-2.0
12/21 22:20	22.4	↓-1.9
12/21 22:30	20.8	↓-1.6
12/21 22:40	19.4	↓-1.4
12/21 22:50	18.2	↓-1.2
12/21 23:00	17.2	↓-1.0
12/21 23:10	16.4	↓-0.8
12/21 23:20	15.8	↓-0.6
12/21 23:30	15.4	↓-0.4
12/21 23:40	15.3	↓-0.1	干潮
12/21 23:50	15.3	0