21 (土)	06:39	15:32	-	-
	97cm	26cm	-	-
小潮 出 04:29 入 18:13 出 09:33 入 00:04

コイセボイ（北海道）2029年04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
4/21 00:00	49.5	↑0.8
4/21 00:10	50.3	↑0.8
4/21 00:20	51.2	↑0.9
4/21 00:30	52.1	↑0.9
4/21 00:40	53.1	↑1.0
4/21 00:50	54.2	↑1.1
4/21 01:00	55.3	↑1.1
4/21 01:10	56.6	↑1.3
4/21 01:20	57.8	↑1.2
4/21 01:30	59.2	↑1.4
4/21 01:40	60.5	↑1.3
4/21 01:50	62.0	↑1.5
4/21 02:00	63.5	↑1.5
4/21 02:10	65.0	↑1.5
4/21 02:20	66.6	↑1.6
4/21 02:30	68.2	↑1.6
4/21 02:40	69.8	↑1.6
4/21 02:50	71.4	↑1.6
4/21 03:00	73.0	↑1.6
4/21 03:10	74.7	↑1.7
4/21 03:20	76.3	↑1.6
4/21 03:30	78.0	↑1.7
4/21 03:40	79.6	↑1.6
4/21 03:50	81.1	↑1.5
4/21 04:00	82.7	↑1.6
4/21 04:10	84.2	↑1.5
4/21 04:20	85.6	↑1.4
4/21 04:30	87.0	↑1.4
4/21 04:40	88.3	↑1.3
4/21 04:50	89.6	↑1.3
4/21 05:00	90.7	↑1.1
4/21 05:10	91.8	↑1.1
4/21 05:20	92.8	↑1.0
4/21 05:30	93.6	↑0.8
4/21 05:40	94.4	↑0.8
4/21 05:50	95.0	↑0.6
4/21 06:00	95.6	↑0.6
4/21 06:10	96.0	↑0.4
4/21 06:20	96.3	↑0.3
4/21 06:30	96.5	↑0.2	満潮
4/21 06:40	96.5	0
4/21 06:50	96.4	↓-0.1
4/21 07:00	96.2	↓-0.2
4/21 07:10	95.8	↓-0.4
4/21 07:20	95.3	↓-0.5
4/21 07:30	94.7	↓-0.6
4/21 07:40	94.0	↓-0.7
4/21 07:50	93.1	↓-0.9
4/21 08:00	92.1	↓-1.0
4/21 08:10	91.0	↓-1.1
4/21 08:20	89.8	↓-1.2
4/21 08:30	88.4	↓-1.4
4/21 08:40	87.0	↓-1.4
4/21 08:50	85.5	↓-1.5
4/21 09:00	83.8	↓-1.7
4/21 09:10	82.1	↓-1.7
4/21 09:20	80.3	↓-1.8
4/21 09:30	78.4	↓-1.9
4/21 09:40	76.5	↓-1.9
4/21 09:50	74.5	↓-2.0
4/21 10:00	72.4	↓-2.1
4/21 10:10	70.4	↓-2.0
4/21 10:20	68.2	↓-2.2	最大潮位差
4/21 10:30	66.1	↓-2.1
4/21 10:40	63.9	↓-2.2	最大潮位差
4/21 10:50	61.8	↓-2.1
4/21 11:00	59.6	↓-2.2	最大潮位差
4/21 11:10	57.5	↓-2.1
4/21 11:20	55.4	↓-2.1
4/21 11:30	53.3	↓-2.1
4/21 11:40	51.2	↓-2.1
4/21 11:50	49.2	↓-2.0
4/21 12:00	47.3	↓-1.9
4/21 12:10	45.4	↓-1.9
4/21 12:20	43.5	↓-1.9
4/21 12:30	41.8	↓-1.7
4/21 12:40	40.1	↓-1.7
4/21 12:50	38.5	↓-1.6
4/21 13:00	36.9	↓-1.6
4/21 13:10	35.5	↓-1.4
4/21 13:20	34.2	↓-1.3
4/21 13:30	32.9	↓-1.3
4/21 13:40	31.8	↓-1.1
4/21 13:50	30.7	↓-1.1
4/21 14:00	29.8	↓-0.9
4/21 14:10	28.9	↓-0.9
4/21 14:20	28.2	↓-0.7
4/21 14:30	27.6	↓-0.6
4/21 14:40	27.0	↓-0.6
4/21 14:50	26.6	↓-0.4
4/21 15:00	26.3	↓-0.3
4/21 15:10	26.0	↓-0.3
4/21 15:20	25.9	↓-0.1
4/21 15:30	25.8	↓-0.1	干潮
4/21 15:40	25.9	↑0.1
4/21 15:50	26.0	↑0.1
4/21 16:00	26.2	↑0.2
4/21 16:10	26.4	↑0.2
4/21 16:20	26.8	↑0.4
4/21 16:30	27.2	↑0.4
4/21 16:40	27.6	↑0.4
4/21 16:50	28.1	↑0.5
4/21 17:00	28.7	↑0.6
4/21 17:10	29.3	↑0.6
4/21 17:20	29.9	↑0.6
4/21 17:30	30.6	↑0.7
4/21 17:40	31.3	↑0.7
4/21 17:50	32.0	↑0.7
4/21 18:00	32.7	↑0.7
4/21 18:10	33.4	↑0.7
4/21 18:20	34.2	↑0.8
4/21 18:30	34.9	↑0.7
4/21 18:40	35.6	↑0.7
4/21 18:50	36.4	↑0.8
4/21 19:00	37.1	↑0.7
4/21 19:10	37.8	↑0.7
4/21 19:20	38.5	↑0.7
4/21 19:30	39.1	↑0.6
4/21 19:40	39.8	↑0.7
4/21 19:50	40.4	↑0.6
4/21 20:00	41.0	↑0.6
4/21 20:10	41.5	↑0.5
4/21 20:20	42.0	↑0.5
4/21 20:30	42.5	↑0.5
4/21 20:40	43.0	↑0.5
4/21 20:50	43.5	↑0.5
4/21 21:00	43.9	↑0.4
4/21 21:10	44.3	↑0.4
4/21 21:20	44.6	↑0.3
4/21 21:30	45.0	↑0.4
4/21 21:40	45.3	↑0.3
4/21 21:50	45.6	↑0.3
4/21 22:00	45.9	↑0.3
4/21 22:10	46.2	↑0.3
4/21 22:20	46.4	↑0.2
4/21 22:30	46.7	↑0.3
4/21 22:40	46.9	↑0.2
4/21 22:50	47.2	↑0.3
4/21 23:00	47.5	↑0.3
4/21 23:10	47.7	↑0.2
4/21 23:20	48.0	↑0.3
4/21 23:30	48.3	↑0.3
4/21 23:40	48.6	↑0.3
4/21 23:50	48.9	↑0.3