4 (金)	08:29	02:03	18:37	09:56
	53cm	32cm	108cm	53cm
小潮 出 05:22 入 16:58 出 12:42 入 22:17

コイセボイ（北海道）2030年10月4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
10/4 00:00	40.8	↓-1.6
10/4 00:10	39.2	↓-1.6
10/4 00:20	37.8	↓-1.4
10/4 00:30	36.5	↓-1.3
10/4 00:40	35.3	↓-1.2
10/4 00:50	34.3	↓-1.0
10/4 01:00	33.5	↓-0.8
10/4 01:10	32.7	↓-0.8
10/4 01:20	32.1	↓-0.6
10/4 01:30	31.7	↓-0.4
10/4 01:40	31.3	↓-0.4
10/4 01:50	31.1	↓-0.2
10/4 02:00	31.1	0	干潮
10/4 02:10	31.1	0
10/4 02:20	31.2	↑0.1
10/4 02:30	31.5	↑0.3
10/4 02:40	31.9	↑0.4
10/4 02:50	32.3	↑0.4
10/4 03:00	32.9	↑0.6
10/4 03:10	33.5	↑0.6
10/4 03:20	34.2	↑0.7
10/4 03:30	34.9	↑0.7
10/4 03:40	35.7	↑0.8
10/4 03:50	36.6	↑0.9
10/4 04:00	37.5	↑0.9
10/4 04:10	38.4	↑0.9
10/4 04:20	39.3	↑0.9
10/4 04:30	40.3	↑1.0
10/4 04:40	41.2	↑0.9
10/4 04:50	42.2	↑1.0
10/4 05:00	43.1	↑0.9
10/4 05:10	44.0	↑0.9
10/4 05:20	44.9	↑0.9
10/4 05:30	45.8	↑0.9
10/4 05:40	46.6	↑0.8
10/4 05:50	47.4	↑0.8
10/4 06:00	48.1	↑0.7
10/4 06:10	48.8	↑0.7
10/4 06:20	49.5	↑0.7
10/4 06:30	50.0	↑0.5
10/4 06:40	50.6	↑0.6
10/4 06:50	51.0	↑0.4
10/4 07:00	51.5	↑0.5
10/4 07:10	51.8	↑0.3
10/4 07:20	52.1	↑0.3
10/4 07:30	52.4	↑0.3
10/4 07:40	52.6	↑0.2
10/4 07:50	52.8	↑0.2
10/4 08:00	52.9	↑0.1
10/4 08:10	53.0	↑0.1
10/4 08:20	53.0	0	満潮
10/4 08:30	53.0	0
10/4 08:40	53.0	0
10/4 08:50	52.9	↓-0.1
10/4 09:00	52.9	0
10/4 09:10	52.8	↓-0.1
10/4 09:20	52.8	0
10/4 09:30	52.7	↓-0.1
10/4 09:40	52.7	0
10/4 09:50	52.6	↓-0.1	干潮
10/4 10:00	52.6	0
10/4 10:10	52.7	↑0.1
10/4 10:20	52.7	0
10/4 10:30	52.9	↑0.2
10/4 10:40	53.0	↑0.1
10/4 10:50	53.2	↑0.2
10/4 11:00	53.5	↑0.3
10/4 11:10	53.9	↑0.4
10/4 11:20	54.3	↑0.4
10/4 11:30	54.8	↑0.5
10/4 11:40	55.3	↑0.5
10/4 11:50	56.0	↑0.7
10/4 12:00	56.7	↑0.7
10/4 12:10	57.5	↑0.8
10/4 12:20	58.4	↑0.9
10/4 12:30	59.3	↑0.9
10/4 12:40	60.4	↑1.1
10/4 12:50	61.5	↑1.1
10/4 13:00	62.7	↑1.2
10/4 13:10	64.0	↑1.3
10/4 13:20	65.4	↑1.4
10/4 13:30	66.8	↑1.4
10/4 13:40	68.3	↑1.5
10/4 13:50	69.9	↑1.6
10/4 14:00	71.5	↑1.6
10/4 14:10	73.1	↑1.6
10/4 14:20	74.8	↑1.7
10/4 14:30	76.6	↑1.8
10/4 14:40	78.3	↑1.7
10/4 14:50	80.1	↑1.8
10/4 15:00	81.9	↑1.8
10/4 15:10	83.7	↑1.8
10/4 15:20	85.5	↑1.8
10/4 15:30	87.3	↑1.8
10/4 15:40	89.1	↑1.8
10/4 15:50	90.8	↑1.7
10/4 16:00	92.5	↑1.7
10/4 16:10	94.1	↑1.6
10/4 16:20	95.7	↑1.6
10/4 16:30	97.2	↑1.5
10/4 16:40	98.6	↑1.4
10/4 16:50	99.9	↑1.3
10/4 17:00	101.2	↑1.3
10/4 17:10	102.3	↑1.1
10/4 17:20	103.4	↑1.1
10/4 17:30	104.3	↑0.9
10/4 17:40	105.1	↑0.8
10/4 17:50	105.8	↑0.7
10/4 18:00	106.3	↑0.5
10/4 18:10	106.8	↑0.5
10/4 18:20	107.1	↑0.3
10/4 18:30	107.2	↑0.1	満潮
10/4 18:40	107.2	0
10/4 18:50	107.1	↓-0.1
10/4 19:00	106.8	↓-0.3
10/4 19:10	106.4	↓-0.4
10/4 19:20	105.9	↓-0.5
10/4 19:30	105.2	↓-0.7
10/4 19:40	104.3	↓-0.9
10/4 19:50	103.4	↓-0.9
10/4 20:00	102.3	↓-1.1
10/4 20:10	101.1	↓-1.2
10/4 20:20	99.7	↓-1.4
10/4 20:30	98.3	↓-1.4
10/4 20:40	96.7	↓-1.6
10/4 20:50	95.1	↓-1.6
10/4 21:00	93.3	↓-1.8
10/4 21:10	91.5	↓-1.8
10/4 21:20	89.5	↓-2.0
10/4 21:30	87.6	↓-1.9
10/4 21:40	85.5	↓-2.1
10/4 21:50	83.4	↓-2.1
10/4 22:00	81.3	↓-2.1
10/4 22:10	79.1	↓-2.2
10/4 22:20	76.9	↓-2.2
10/4 22:30	74.6	↓-2.3	最大潮位差
10/4 22:40	72.4	↓-2.2
10/4 22:50	70.2	↓-2.2
10/4 23:00	68.0	↓-2.2
10/4 23:10	65.8	↓-2.2
10/4 23:20	63.6	↓-2.2
10/4 23:30	61.5	↓-2.1
10/4 23:40	59.4	↓-2.1
10/4 23:50	57.4	↓-2.0