20 (木)	04:40	12:16	18:29	22:36
	111cm	21cm	63cm	51cm
中潮 出 03:38 入 19:08 出 22:03 入 08:39 潮干狩り ○ 11:14～13:20

コイセボイ（北海道）2030年06月20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
6/20 00:00	63.4	↑1.7
6/20 00:10	65.3	↑1.9
6/20 00:20	67.2	↑1.9
6/20 00:30	69.2	↑2.0
6/20 00:40	71.3	↑2.1
6/20 00:50	73.5	↑2.2
6/20 01:00	75.7	↑2.2
6/20 01:10	78.0	↑2.3
6/20 01:20	80.3	↑2.3
6/20 01:30	82.6	↑2.3
6/20 01:40	84.9	↑2.3
6/20 01:50	87.2	↑2.3
6/20 02:00	89.4	↑2.2
6/20 02:10	91.6	↑2.2
6/20 02:20	93.8	↑2.2
6/20 02:30	95.9	↑2.1
6/20 02:40	97.9	↑2.0
6/20 02:50	99.8	↑1.9
6/20 03:00	101.5	↑1.7
6/20 03:10	103.2	↑1.7
6/20 03:20	104.7	↑1.5
6/20 03:30	106.1	↑1.4
6/20 03:40	107.3	↑1.2
6/20 03:50	108.3	↑1.0
6/20 04:00	109.2	↑0.9
6/20 04:10	109.8	↑0.6
6/20 04:20	110.3	↑0.5
6/20 04:30	110.6	↑0.3	満潮
6/20 04:40	110.7	↑0.1	満潮
6/20 04:50	110.5	↓-0.2
6/20 05:00	110.2	↓-0.3
6/20 05:10	109.6	↓-0.6
6/20 05:20	108.9	↓-0.7
6/20 05:30	107.9	↓-1.0
6/20 05:40	106.7	↓-1.2
6/20 05:50	105.4	↓-1.3
6/20 06:00	103.8	↓-1.6
6/20 06:10	102.0	↓-1.8
6/20 06:20	100.1	↓-1.9
6/20 06:30	98.0	↓-2.1
6/20 06:40	95.7	↓-2.3
6/20 06:50	93.3	↓-2.4
6/20 07:00	90.8	↓-2.5
6/20 07:10	88.1	↓-2.7
6/20 07:20	85.3	↓-2.8
6/20 07:30	82.4	↓-2.9
6/20 07:40	79.5	↓-2.9
6/20 07:50	76.4	↓-3.1
6/20 08:00	73.3	↓-3.1
6/20 08:10	70.2	↓-3.1
6/20 08:20	67.1	↓-3.1
6/20 08:30	63.9	↓-3.2	最大潮位差
6/20 08:40	60.8	↓-3.1
6/20 08:50	57.7	↓-3.1
6/20 09:00	54.6	↓-3.1
6/20 09:10	51.6	↓-3.0
6/20 09:20	48.7	↓-2.9
6/20 09:30	45.8	↓-2.9
6/20 09:40	43.1	↓-2.7
6/20 09:50	40.5	↓-2.6
6/20 10:00	38.0	↓-2.5
6/20 10:10	35.6	↓-2.4
6/20 10:20	33.4	↓-2.2
6/20 10:30	31.4	↓-2.0
6/20 10:40	29.5	↓-1.9
6/20 10:50	27.8	↓-1.7
6/20 11:00	26.3	↓-1.5
6/20 11:10	24.9	↓-1.4
6/20 11:20	23.8	↓-1.1
6/20 11:30	22.8	↓-1.0
6/20 11:40	22.0	↓-0.8
6/20 11:50	21.5	↓-0.5
6/20 12:00	21.1	↓-0.4
6/20 12:10	20.9	↓-0.2	干潮
6/20 12:20	20.9	0
6/20 12:30	21.1	↑0.2
6/20 12:40	21.4	↑0.3
6/20 12:50	22.0	↑0.6
6/20 13:00	22.6	↑0.6
6/20 13:10	23.5	↑0.9
6/20 13:20	24.5	↑1.0
6/20 13:30	25.6	↑1.1
6/20 13:40	26.8	↑1.2
6/20 13:50	28.2	↑1.4
6/20 14:00	29.6	↑1.4
6/20 14:10	31.2	↑1.6
6/20 14:20	32.8	↑1.6
6/20 14:30	34.4	↑1.6
6/20 14:40	36.1	↑1.7
6/20 14:50	37.9	↑1.8
6/20 15:00	39.7	↑1.8
6/20 15:10	41.4	↑1.7
6/20 15:20	43.2	↑1.8
6/20 15:30	44.9	↑1.7
6/20 15:40	46.6	↑1.7
6/20 15:50	48.3	↑1.7
6/20 16:00	49.9	↑1.6
6/20 16:10	51.5	↑1.6
6/20 16:20	52.9	↑1.4
6/20 16:30	54.3	↑1.4
6/20 16:40	55.6	↑1.3
6/20 16:50	56.8	↑1.2
6/20 17:00	57.9	↑1.1
6/20 17:10	58.9	↑1.0
6/20 17:20	59.8	↑0.9
6/20 17:30	60.5	↑0.7
6/20 17:40	61.2	↑0.7
6/20 17:50	61.7	↑0.5
6/20 18:00	62.1	↑0.4
6/20 18:10	62.3	↑0.2
6/20 18:20	62.5	↑0.2	満潮
6/20 18:30	62.5	0
6/20 18:40	62.5	0
6/20 18:50	62.3	↓-0.2
6/20 19:00	62.0	↓-0.3
6/20 19:10	61.6	↓-0.4
6/20 19:20	61.2	↓-0.4
6/20 19:30	60.7	↓-0.5
6/20 19:40	60.1	↓-0.6
6/20 19:50	59.4	↓-0.7
6/20 20:00	58.7	↓-0.7
6/20 20:10	58.0	↓-0.7
6/20 20:20	57.2	↓-0.8
6/20 20:30	56.5	↓-0.7
6/20 20:40	55.7	↓-0.8
6/20 20:50	54.9	↓-0.8
6/20 21:00	54.2	↓-0.7
6/20 21:10	53.5	↓-0.7
6/20 21:20	52.8	↓-0.7
6/20 21:30	52.2	↓-0.6
6/20 21:40	51.6	↓-0.6
6/20 21:50	51.1	↓-0.5
6/20 22:00	50.7	↓-0.4
6/20 22:10	50.4	↓-0.3
6/20 22:20	50.2	↓-0.2
6/20 22:30	50.1	↓-0.1	干潮
6/20 22:40	50.1	0
6/20 22:50	50.2	↑0.1
6/20 23:00	50.4	↑0.2
6/20 23:10	50.8	↑0.4
6/20 23:20	51.3	↑0.5
6/20 23:30	51.9	↑0.6
6/20 23:40	52.6	↑0.7
6/20 23:50	53.5	↑0.9