9 (月)	04:51	12:27	18:48	22:16
	104cm	15cm	56cm	48cm
中潮 出 04:49 入 17:59 出 07:40 入 23:02 潮干狩り ○ 10:43～14:22

コイセボイ（北海道）2057年04月9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
4/9 00:00	55.8	↑1.5
4/9 00:10	57.4	↑1.6
4/9 00:20	59.1	↑1.7
4/9 00:30	60.9	↑1.8
4/9 00:40	62.8	↑1.9
4/9 00:50	64.8	↑2.0
4/9 01:00	66.8	↑2.0
4/9 01:10	69.0	↑2.2
4/9 01:20	71.1	↑2.1
4/9 01:30	73.4	↑2.3
4/9 01:40	75.6	↑2.2
4/9 01:50	77.9	↑2.3
4/9 02:00	80.1	↑2.2
4/9 02:10	82.3	↑2.2
4/9 02:20	84.5	↑2.2
4/9 02:30	86.6	↑2.1
4/9 02:40	88.7	↑2.1
4/9 02:50	90.7	↑2.0
4/9 03:00	92.6	↑1.9
4/9 03:10	94.4	↑1.8
4/9 03:20	96.0	↑1.6
4/9 03:30	97.6	↑1.6
4/9 03:40	98.9	↑1.3
4/9 03:50	100.2	↑1.3
4/9 04:00	101.2	↑1.0
4/9 04:10	102.1	↑0.9
4/9 04:20	102.8	↑0.7
4/9 04:30	103.3	↑0.5
4/9 04:40	103.6	↑0.3
4/9 04:50	103.7	↑0.1	満潮
4/9 05:00	103.6	↓-0.1
4/9 05:10	103.3	↓-0.3
4/9 05:20	102.7	↓-0.6
4/9 05:30	102.0	↓-0.7
4/9 05:40	101.0	↓-1.0
4/9 05:50	99.9	↓-1.1
4/9 06:00	98.5	↓-1.4
4/9 06:10	97.0	↓-1.5
4/9 06:20	95.3	↓-1.7
4/9 06:30	93.4	↓-1.9
4/9 06:40	91.3	↓-2.1
4/9 06:50	89.0	↓-2.3
4/9 07:00	86.6	↓-2.4
4/9 07:10	84.1	↓-2.5
4/9 07:20	81.4	↓-2.7
4/9 07:30	78.7	↓-2.7
4/9 07:40	75.8	↓-2.9
4/9 07:50	72.8	↓-3.0
4/9 08:00	69.8	↓-3.0
4/9 08:10	66.7	↓-3.1
4/9 08:20	63.6	↓-3.1
4/9 08:30	60.5	↓-3.1
4/9 08:40	57.4	↓-3.1
4/9 08:50	54.2	↓-3.2	最大潮位差
4/9 09:00	51.1	↓-3.1
4/9 09:10	48.1	↓-3.0
4/9 09:20	45.1	↓-3.0
4/9 09:30	42.2	↓-2.9
4/9 09:40	39.3	↓-2.9
4/9 09:50	36.6	↓-2.7
4/9 10:00	34.0	↓-2.6
4/9 10:10	31.5	↓-2.5
4/9 10:20	29.2	↓-2.3
4/9 10:30	27.0	↓-2.2
4/9 10:40	24.9	↓-2.1
4/9 10:50	23.0	↓-1.9
4/9 11:00	21.3	↓-1.7
4/9 11:10	19.8	↓-1.5
4/9 11:20	18.5	↓-1.3
4/9 11:30	17.3	↓-1.2
4/9 11:40	16.3	↓-1.0
4/9 11:50	15.6	↓-0.7
4/9 12:00	15.0	↓-0.6
4/9 12:10	14.6	↓-0.4
4/9 12:20	14.4	↓-0.2	干潮
4/9 12:30	14.4	0
4/9 12:40	14.5	↑0.1
4/9 12:50	14.8	↑0.3
4/9 13:00	15.3	↑0.5
4/9 13:10	16.0	↑0.7
4/9 13:20	16.8	↑0.8
4/9 13:30	17.7	↑0.9
4/9 13:40	18.8	↑1.1
4/9 13:50	20.0	↑1.2
4/9 14:00	21.3	↑1.3
4/9 14:10	22.7	↑1.4
4/9 14:20	24.2	↑1.5
4/9 14:30	25.7	↑1.5
4/9 14:40	27.3	↑1.6
4/9 14:50	29.0	↑1.7
4/9 15:00	30.7	↑1.7
4/9 15:10	32.4	↑1.7
4/9 15:20	34.1	↑1.7
4/9 15:30	35.8	↑1.7
4/9 15:40	37.4	↑1.6
4/9 15:50	39.1	↑1.7
4/9 16:00	40.7	↑1.6
4/9 16:10	42.3	↑1.6
4/9 16:20	43.8	↑1.5
4/9 16:30	45.2	↑1.4
4/9 16:40	46.6	↑1.4
4/9 16:50	47.8	↑1.2
4/9 17:00	49.0	↑1.2
4/9 17:10	50.1	↑1.1
4/9 17:20	51.1	↑1.0
4/9 17:30	51.9	↑0.8
4/9 17:40	52.7	↑0.8
4/9 17:50	53.3	↑0.6
4/9 18:00	53.9	↑0.6
4/9 18:10	54.3	↑0.4
4/9 18:20	54.7	↑0.4
4/9 18:30	54.9	↑0.2
4/9 18:40	55.0	↑0.1	満潮
4/9 18:50	55.0	0
4/9 19:00	54.9	↓-0.1
4/9 19:10	54.8	↓-0.1
4/9 19:20	54.6	↓-0.2
4/9 19:30	54.3	↓-0.3
4/9 19:40	53.9	↓-0.4
4/9 19:50	53.5	↓-0.4
4/9 20:00	53.0	↓-0.5
4/9 20:10	52.5	↓-0.5
4/9 20:20	52.0	↓-0.5
4/9 20:30	51.5	↓-0.5
4/9 20:40	50.9	↓-0.6
4/9 20:50	50.4	↓-0.5
4/9 21:00	49.9	↓-0.5
4/9 21:10	49.4	↓-0.5
4/9 21:20	49.0	↓-0.4
4/9 21:30	48.6	↓-0.4
4/9 21:40	48.3	↓-0.3
4/9 21:50	48.0	↓-0.3
4/9 22:00	47.8	↓-0.2
4/9 22:10	47.7	↓-0.1	干潮
4/9 22:20	47.7	0
4/9 22:30	47.8	↑0.1
4/9 22:40	48.1	↑0.3
4/9 22:50	48.4	↑0.3
4/9 23:00	48.8	↑0.4
4/9 23:10	49.4	↑0.6
4/9 23:20	50.0	↑0.6
4/9 23:30	50.8	↑0.8
4/9 23:40	51.7	↑0.9
4/9 23:50	52.8	↑1.1