20 (金)	05:46	14:19	-	-
	105cm	21cm	-	-
小潮 出 04:30 入 18:12 出 08:28 入 - 潮干狩り ○ 12:58～15:51

コイセボイ（北海道）2029年04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
4/20 00:00	52.6	↑1.2
4/20 00:10	53.9	↑1.3
4/20 00:20	55.3	↑1.4
4/20 00:30	56.8	↑1.5
4/20 00:40	58.4	↑1.6
4/20 00:50	60.0	↑1.6
4/20 01:00	61.7	↑1.7
4/20 01:10	63.5	↑1.8
4/20 01:20	65.4	↑1.9
4/20 01:30	67.3	↑1.9
4/20 01:40	69.2	↑1.9
4/20 01:50	71.2	↑2.0
4/20 02:00	73.2	↑2.0
4/20 02:10	75.2	↑2.0
4/20 02:20	77.3	↑2.1
4/20 02:30	79.3	↑2.0
4/20 02:40	81.3	↑2.0
4/20 02:50	83.3	↑2.0
4/20 03:00	85.3	↑2.0
4/20 03:10	87.2	↑1.9
4/20 03:20	89.1	↑1.9
4/20 03:30	90.9	↑1.8
4/20 03:40	92.6	↑1.7
4/20 03:50	94.3	↑1.7
4/20 04:00	95.8	↑1.5
4/20 04:10	97.3	↑1.5
4/20 04:20	98.6	↑1.3
4/20 04:30	99.8	↑1.2
4/20 04:40	100.9	↑1.1
4/20 04:50	101.8	↑0.9
4/20 05:00	102.6	↑0.8
4/20 05:10	103.3	↑0.7
4/20 05:20	103.8	↑0.5
4/20 05:30	104.1	↑0.3
4/20 05:40	104.3	↑0.2	満潮
4/20 05:50	104.3	0
4/20 06:00	104.1	↓-0.2
4/20 06:10	103.8	↓-0.3
4/20 06:20	103.3	↓-0.5
4/20 06:30	102.6	↓-0.7
4/20 06:40	101.8	↓-0.8
4/20 06:50	100.8	↓-1.0
4/20 07:00	99.6	↓-1.2
4/20 07:10	98.3	↓-1.3
4/20 07:20	96.9	↓-1.4
4/20 07:30	95.3	↓-1.6
4/20 07:40	93.5	↓-1.8
4/20 07:50	91.7	↓-1.8
4/20 08:00	89.7	↓-2.0
4/20 08:10	87.6	↓-2.1
4/20 08:20	85.4	↓-2.2
4/20 08:30	83.1	↓-2.3
4/20 08:40	80.7	↓-2.4
4/20 08:50	78.2	↓-2.5
4/20 09:00	75.7	↓-2.5
4/20 09:10	73.1	↓-2.6
4/20 09:20	70.5	↓-2.6
4/20 09:30	67.9	↓-2.6
4/20 09:40	65.2	↓-2.7	最大潮位差
4/20 09:50	62.6	↓-2.6
4/20 10:00	59.9	↓-2.7	最大潮位差
4/20 10:10	57.3	↓-2.6
4/20 10:20	54.7	↓-2.6
4/20 10:30	52.1	↓-2.6
4/20 10:40	49.6	↓-2.5
4/20 10:50	47.2	↓-2.4
4/20 11:00	44.8	↓-2.4
4/20 11:10	42.5	↓-2.3
4/20 11:20	40.3	↓-2.2
4/20 11:30	38.1	↓-2.2
4/20 11:40	36.1	↓-2.0
4/20 11:50	34.2	↓-1.9
4/20 12:00	32.4	↓-1.8
4/20 12:10	30.7	↓-1.7
4/20 12:20	29.2	↓-1.5
4/20 12:30	27.7	↓-1.5
4/20 12:40	26.4	↓-1.3
4/20 12:50	25.3	↓-1.1
4/20 13:00	24.2	↓-1.1
4/20 13:10	23.3	↓-0.9
4/20 13:20	22.5	↓-0.8
4/20 13:30	21.9	↓-0.6
4/20 13:40	21.4	↓-0.5
4/20 13:50	21.0	↓-0.4
4/20 14:00	20.7	↓-0.3
4/20 14:10	20.6	↓-0.1	干潮
4/20 14:20	20.5	↓-0.1
4/20 14:30	20.6	↑0.1
4/20 14:40	20.8	↑0.2
4/20 14:50	21.1	↑0.3
4/20 15:00	21.4	↑0.3
4/20 15:10	21.9	↑0.5
4/20 15:20	22.4	↑0.5
4/20 15:30	23.0	↑0.6
4/20 15:40	23.7	↑0.7
4/20 15:50	24.4	↑0.7
4/20 16:00	25.2	↑0.8
4/20 16:10	26.0	↑0.8
4/20 16:20	26.8	↑0.8
4/20 16:30	27.7	↑0.9
4/20 16:40	28.6	↑0.9
4/20 16:50	29.5	↑0.9
4/20 17:00	30.4	↑0.9
4/20 17:10	31.3	↑0.9
4/20 17:20	32.2	↑0.9
4/20 17:30	33.1	↑0.9
4/20 17:40	33.9	↑0.8
4/20 17:50	34.8	↑0.9
4/20 18:00	35.6	↑0.8
4/20 18:10	36.3	↑0.7
4/20 18:20	37.1	↑0.8
4/20 18:30	37.8	↑0.7
4/20 18:40	38.4	↑0.6
4/20 18:50	39.0	↑0.6
4/20 19:00	39.6	↑0.6
4/20 19:10	40.1	↑0.5
4/20 19:20	40.6	↑0.5
4/20 19:30	41.0	↑0.4
4/20 19:40	41.4	↑0.4
4/20 19:50	41.8	↑0.4
4/20 20:00	42.1	↑0.3
4/20 20:10	42.4	↑0.3
4/20 20:20	42.6	↑0.2
4/20 20:30	42.8	↑0.2
4/20 20:40	43.0	↑0.2
4/20 20:50	43.2	↑0.2
4/20 21:00	43.4	↑0.2
4/20 21:10	43.5	↑0.1
4/20 21:20	43.6	↑0.1
4/20 21:30	43.8	↑0.2
4/20 21:40	43.9	↑0.1
4/20 21:50	44.1	↑0.2
4/20 22:00	44.3	↑0.2
4/20 22:10	44.5	↑0.2
4/20 22:20	44.7	↑0.2
4/20 22:30	45.0	↑0.3
4/20 22:40	45.3	↑0.3
4/20 22:50	45.6	↑0.3
4/20 23:00	46.0	↑0.4
4/20 23:10	46.4	↑0.4
4/20 23:20	46.9	↑0.5
4/20 23:30	47.5	↑0.6
4/20 23:40	48.1	↑0.6
4/20 23:50	48.7	↑0.6