18 (土)	03:59	05:43	13:17	21:27
	69cm	68cm	124cm	15cm
大潮 出 06:51 入 15:45 出 14:53 入 05:52

コイセボイ（北海道）2021年12月18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
12/18 00:00	45.8	↑1.8
12/18 00:10	47.6	↑1.8
12/18 00:20	49.3	↑1.7
12/18 00:30	51.0	↑1.7
12/18 00:40	52.7	↑1.7
12/18 00:50	54.3	↑1.6
12/18 01:00	55.8	↑1.5
12/18 01:10	57.2	↑1.4
12/18 01:20	58.6	↑1.4
12/18 01:30	59.9	↑1.3
12/18 01:40	61.1	↑1.2
12/18 01:50	62.2	↑1.1
12/18 02:00	63.2	↑1.0
12/18 02:10	64.1	↑0.9
12/18 02:20	64.9	↑0.8
12/18 02:30	65.6	↑0.7
12/18 02:40	66.3	↑0.7
12/18 02:50	66.8	↑0.5
12/18 03:00	67.2	↑0.4
12/18 03:10	67.6	↑0.4
12/18 03:20	67.9	↑0.3
12/18 03:30	68.1	↑0.2
12/18 03:40	68.2	↑0.1
12/18 03:50	68.3	↑0.1	満潮
12/18 04:00	68.3	0
12/18 04:10	68.2	↓-0.1
12/18 04:20	68.2	0
12/18 04:30	68.1	↓-0.1
12/18 04:40	68.0	↓-0.1
12/18 04:50	67.8	↓-0.2
12/18 05:00	67.7	↓-0.1
12/18 05:10	67.6	↓-0.1
12/18 05:20	67.5	↓-0.1
12/18 05:30	67.4	↓-0.1
12/18 05:40	67.4	0	干潮
12/18 05:50	67.4	0
12/18 06:00	67.5	↑0.1
12/18 06:10	67.6	↑0.1
12/18 06:20	67.8	↑0.2
12/18 06:30	68.1	↑0.3
12/18 06:40	68.5	↑0.4
12/18 06:50	69.0	↑0.5
12/18 07:00	69.5	↑0.5
12/18 07:10	70.2	↑0.7
12/18 07:20	70.9	↑0.7
12/18 07:30	71.8	↑0.9
12/18 07:40	72.8	↑1.0
12/18 07:50	73.9	↑1.1
12/18 08:00	75.1	↑1.2
12/18 08:10	76.4	↑1.3
12/18 08:20	77.8	↑1.4
12/18 08:30	79.3	↑1.5
12/18 08:40	80.8	↑1.5
12/18 08:50	82.5	↑1.7
12/18 09:00	84.3	↑1.8
12/18 09:10	86.1	↑1.8
12/18 09:20	88.0	↑1.9
12/18 09:30	90.0	↑2.0
12/18 09:40	92.0	↑2.0
12/18 09:50	94.0	↑2.0
12/18 10:00	96.1	↑2.1
12/18 10:10	98.2	↑2.1
12/18 10:20	100.3	↑2.1
12/18 10:30	102.3	↑2.0
12/18 10:40	104.4	↑2.1
12/18 10:50	106.4	↑2.0
12/18 11:00	108.4	↑2.0
12/18 11:10	110.3	↑1.9
12/18 11:20	112.1	↑1.8
12/18 11:30	113.8	↑1.7
12/18 11:40	115.4	↑1.6
12/18 11:50	117.0	↑1.6
12/18 12:00	118.3	↑1.3
12/18 12:10	119.6	↑1.3
12/18 12:20	120.7	↑1.1
12/18 12:30	121.6	↑0.9
12/18 12:40	122.4	↑0.8
12/18 12:50	123.0	↑0.6
12/18 13:00	123.4	↑0.4
12/18 13:10	123.6	↑0.2	満潮
12/18 13:20	123.6	0
12/18 13:30	123.4	↓-0.2
12/18 13:40	123.0	↓-0.4
12/18 13:50	122.4	↓-0.6
12/18 14:00	121.6	↓-0.8
12/18 14:10	120.6	↓-1.0
12/18 14:20	119.3	↓-1.3
12/18 14:30	117.9	↓-1.4
12/18 14:40	116.2	↓-1.7
12/18 14:50	114.4	↓-1.8
12/18 15:00	112.4	↓-2.0
12/18 15:10	110.1	↓-2.3
12/18 15:20	107.7	↓-2.4
12/18 15:30	105.2	↓-2.5
12/18 15:40	102.4	↓-2.8
12/18 15:50	99.6	↓-2.8
12/18 16:00	96.6	↓-3.0
12/18 16:10	93.4	↓-3.2
12/18 16:20	90.2	↓-3.2
12/18 16:30	86.9	↓-3.3
12/18 16:40	83.5	↓-3.4
12/18 16:50	80.0	↓-3.5
12/18 17:00	76.5	↓-3.5
12/18 17:10	72.9	↓-3.6	最大潮位差
12/18 17:20	69.3	↓-3.6	最大潮位差
12/18 17:30	65.8	↓-3.5
12/18 17:40	62.2	↓-3.6	最大潮位差
12/18 17:50	58.7	↓-3.5
12/18 18:00	55.2	↓-3.5
12/18 18:10	51.8	↓-3.4
12/18 18:20	48.5	↓-3.3
12/18 18:30	45.2	↓-3.3
12/18 18:40	42.1	↓-3.1
12/18 18:50	39.1	↓-3.0
12/18 19:00	36.2	↓-2.9
12/18 19:10	33.5	↓-2.7
12/18 19:20	31.0	↓-2.5
12/18 19:30	28.6	↓-2.4
12/18 19:40	26.3	↓-2.3
12/18 19:50	24.3	↓-2.0
12/18 20:00	22.5	↓-1.8
12/18 20:10	20.8	↓-1.7
12/18 20:20	19.4	↓-1.4
12/18 20:30	18.1	↓-1.3
12/18 20:40	17.1	↓-1.0
12/18 20:50	16.3	↓-0.8
12/18 21:00	15.6	↓-0.7
12/18 21:10	15.2	↓-0.4
12/18 21:20	15.0	↓-0.2	干潮
12/18 21:30	15.0	0
12/18 21:40	15.2	↑0.2
12/18 21:50	15.6	↑0.4
12/18 22:00	16.1	↑0.5
12/18 22:10	16.8	↑0.7
12/18 22:20	17.7	↑0.9
12/18 22:30	18.8	↑1.1
12/18 22:40	19.9	↑1.1
12/18 22:50	21.3	↑1.4
12/18 23:00	22.7	↑1.4
12/18 23:10	24.2	↑1.5
12/18 23:20	25.9	↑1.7
12/18 23:30	27.6	↑1.7
12/18 23:40	29.4	↑1.8
12/18 23:50	31.3	↑1.9