12 (水)	03:20	10:50	17:17	21:05
	107cm	6cm	61cm	48cm
中潮 出 04:43 入 18:02 出 21:52 入 05:44 潮干狩り ◎ 08:39～13:14

コイセボイ（北海道）2028年04月12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
4/12 00:00	73.8	↑2.3
4/12 00:10	76.2	↑2.4
4/12 00:20	78.6	↑2.4
4/12 00:30	81.0	↑2.4
4/12 00:40	83.4	↑2.4
4/12 00:50	85.8	↑2.4
4/12 01:00	88.1	↑2.3
4/12 01:10	90.3	↑2.2
4/12 01:20	92.5	↑2.2
4/12 01:30	94.6	↑2.1
4/12 01:40	96.5	↑1.9
4/12 01:50	98.4	↑1.9
4/12 02:00	100.0	↑1.6
4/12 02:10	101.6	↑1.6
4/12 02:20	102.9	↑1.3
4/12 02:30	104.1	↑1.2
4/12 02:40	105.0	↑0.9
4/12 02:50	105.8	↑0.8
4/12 03:00	106.3	↑0.5
4/12 03:10	106.7	↑0.4	満潮
4/12 03:20	106.8	↑0.1	満潮
4/12 03:30	106.6	↓-0.2
4/12 03:40	106.3	↓-0.3
4/12 03:50	105.7	↓-0.6
4/12 04:00	104.8	↓-0.9
4/12 04:10	103.8	↓-1.0
4/12 04:20	102.4	↓-1.4
4/12 04:30	100.9	↓-1.5
4/12 04:40	99.1	↓-1.8
4/12 04:50	97.2	↓-1.9
4/12 05:00	95.0	↓-2.2
4/12 05:10	92.6	↓-2.4
4/12 05:20	90.0	↓-2.6
4/12 05:30	87.3	↓-2.7
4/12 05:40	84.4	↓-2.9
4/12 05:50	81.3	↓-3.1
4/12 06:00	78.2	↓-3.1
4/12 06:10	74.9	↓-3.3
4/12 06:20	71.5	↓-3.4
4/12 06:30	68.0	↓-3.5
4/12 06:40	64.5	↓-3.5
4/12 06:50	60.9	↓-3.6	最大潮位差
4/12 07:00	57.3	↓-3.6	最大潮位差
4/12 07:10	53.7	↓-3.6	最大潮位差
4/12 07:20	50.1	↓-3.6	最大潮位差
4/12 07:30	46.6	↓-3.5
4/12 07:40	43.1	↓-3.5
4/12 07:50	39.6	↓-3.5
4/12 08:00	36.3	↓-3.3
4/12 08:10	33.0	↓-3.3
4/12 08:20	29.9	↓-3.1
4/12 08:30	26.9	↓-3.0
4/12 08:40	24.1	↓-2.8
4/12 08:50	21.4	↓-2.7
4/12 09:00	18.9	↓-2.5
4/12 09:10	16.6	↓-2.3
4/12 09:20	14.5	↓-2.1
4/12 09:30	12.6	↓-1.9
4/12 09:40	11.0	↓-1.6
4/12 09:50	9.5	↓-1.5
4/12 10:00	8.3	↓-1.2
4/12 10:10	7.3	↓-1.0
4/12 10:20	6.5	↓-0.8
4/12 10:30	6.0	↓-0.5
4/12 10:40	5.6	↓-0.4	干潮
4/12 10:50	5.6	0	干潮
4/12 11:00	5.7	↑0.1
4/12 11:10	6.1	↑0.4
4/12 11:20	6.6	↑0.5
4/12 11:30	7.4	↑0.8
4/12 11:40	8.4	↑1.0
4/12 11:50	9.5	↑1.1
4/12 12:00	10.8	↑1.3
4/12 12:10	12.3	↑1.5
4/12 12:20	13.9	↑1.6
4/12 12:30	15.7	↑1.8
4/12 12:40	17.5	↑1.8
4/12 12:50	19.5	↑2.0
4/12 13:00	21.6	↑2.1
4/12 13:10	23.7	↑2.1
4/12 13:20	25.9	↑2.2
4/12 13:30	28.1	↑2.2
4/12 13:40	30.4	↑2.3
4/12 13:50	32.6	↑2.2
4/12 14:00	34.8	↑2.2
4/12 14:10	37.1	↑2.3
4/12 14:20	39.2	↑2.1
4/12 14:30	41.4	↑2.2
4/12 14:40	43.4	↑2.0
4/12 14:50	45.4	↑2.0
4/12 15:00	47.3	↑1.9
4/12 15:10	49.1	↑1.8
4/12 15:20	50.7	↑1.6
4/12 15:30	52.3	↑1.6
4/12 15:40	53.7	↑1.4
4/12 15:50	55.0	↑1.3
4/12 16:00	56.1	↑1.1
4/12 16:10	57.1	↑1.0
4/12 16:20	58.0	↑0.9
4/12 16:30	58.7	↑0.7
4/12 16:40	59.3	↑0.6
4/12 16:50	59.7	↑0.4
4/12 17:00	60.0	↑0.3
4/12 17:10	60.1	↑0.1	満潮
4/12 17:20	60.1	0
4/12 17:30	60.0	↓-0.1
4/12 17:40	59.8	↓-0.2
4/12 17:50	59.4	↓-0.4
4/12 18:00	59.0	↓-0.4
4/12 18:10	58.5	↓-0.5
4/12 18:20	57.9	↓-0.6
4/12 18:30	57.2	↓-0.7
4/12 18:40	56.4	↓-0.8
4/12 18:50	55.7	↓-0.7
4/12 19:00	54.9	↓-0.8
4/12 19:10	54.1	↓-0.8
4/12 19:20	53.2	↓-0.9
4/12 19:30	52.4	↓-0.8
4/12 19:40	51.7	↓-0.7
4/12 19:50	50.9	↓-0.8
4/12 20:00	50.2	↓-0.7
4/12 20:10	49.6	↓-0.6
4/12 20:20	49.1	↓-0.5
4/12 20:30	48.6	↓-0.5
4/12 20:40	48.3	↓-0.3
4/12 20:50	48.0	↓-0.3
4/12 21:00	47.9	↓-0.1	干潮
4/12 21:10	47.9	0
4/12 21:20	48.1	↑0.2
4/12 21:30	48.3	↑0.2
4/12 21:40	48.8	↑0.5
4/12 21:50	49.4	↑0.6
4/12 22:00	50.1	↑0.7
4/12 22:10	51.0	↑0.9
4/12 22:20	52.0	↑1.0
4/12 22:30	53.2	↑1.2
4/12 22:40	54.5	↑1.3
4/12 22:50	56.0	↑1.5
4/12 23:00	57.6	↑1.6
4/12 23:10	59.4	↑1.8
4/12 23:20	61.3	↑1.9
4/12 23:30	63.3	↑2.0
4/12 23:40	65.4	↑2.1
4/12 23:50	67.6	↑2.2