20 (土)	02:00	07:48	13:04	19:08
	119cm	70cm	117cm	49cm
中潮 出 04:49 入 18:25 出 14:46 入 03:20

室蘭（北海道）2024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	111.7	↑1.8
4/20 00:10	113.3	↑1.6
4/20 00:20	114.6	↑1.3
4/20 00:30	115.6	↑1.0
4/20 00:40	116.5	↑0.9
4/20 00:50	117.1	↑0.6
4/20 01:00	117.6	↑0.5
4/20 01:10	118.0	↑0.4
4/20 01:20	118.3	↑0.3
4/20 01:30	118.5	↑0.2
4/20 01:40	118.6	↑0.1
4/20 01:50	118.7	↑0.1	満潮
4/20 02:00	118.7	0	満潮
4/20 02:10	118.7	0
4/20 02:20	118.6	↓-0.1
4/20 02:30	118.3	↓-0.3
4/20 02:40	118.0	↓-0.3
4/20 02:50	117.4	↓-0.6
4/20 03:00	116.7	↓-0.7
4/20 03:10	115.7	↓-1.0
4/20 03:20	114.5	↓-1.2
4/20 03:30	113.1	↓-1.4
4/20 03:40	111.3	↓-1.8
4/20 03:50	109.3	↓-2.0
4/20 04:00	107.1	↓-2.2
4/20 04:10	104.6	↓-2.5
4/20 04:20	101.9	↓-2.7
4/20 04:30	99.1	↓-2.8
4/20 04:40	96.2	↓-2.9
4/20 04:50	93.3	↓-2.9
4/20 05:00	90.4	↓-2.9
4/20 05:10	87.5	↓-2.9
4/20 05:20	84.8	↓-2.7
4/20 05:30	82.3	↓-2.5
4/20 05:40	80.0	↓-2.3
4/20 05:50	77.9	↓-2.1
4/20 06:00	76.1	↓-1.8
4/20 06:10	74.5	↓-1.6
4/20 06:20	73.3	↓-1.2
4/20 06:30	72.3	↓-1.0
4/20 06:40	71.5	↓-0.8
4/20 06:50	70.9	↓-0.6
4/20 07:00	70.5	↓-0.4
4/20 07:10	70.3	↓-0.2
4/20 07:20	70.1	↓-0.2
4/20 07:30	70.0	↓-0.1
4/20 07:40	70.0	0	干潮
4/20 07:50	70.0	0
4/20 08:00	70.0	0
4/20 08:10	70.1	↑0.1
4/20 08:20	70.2	↑0.1
4/20 08:30	70.3	↑0.1
4/20 08:40	70.6	↑0.3
4/20 08:50	71.0	↑0.4
4/20 09:00	71.5	↑0.5
4/20 09:10	72.3	↑0.8
4/20 09:20	73.2	↑0.9
4/20 09:30	74.5	↑1.3
4/20 09:40	76.0	↑1.5
4/20 09:50	77.8	↑1.8
4/20 10:00	79.8	↑2.0
4/20 10:10	82.1	↑2.3
4/20 10:20	84.7	↑2.6
4/20 10:30	87.5	↑2.8
4/20 10:40	90.4	↑2.9
4/20 10:50	93.3	↑2.9
4/20 11:00	96.3	↑3.0
4/20 11:10	99.3	↑3.0
4/20 11:20	102.2	↑2.9
4/20 11:30	104.8	↑2.6
4/20 11:40	107.3	↑2.5
4/20 11:50	109.5	↑2.2
4/20 12:00	111.5	↑2.0
4/20 12:10	113.1	↑1.6
4/20 12:20	114.4	↑1.3
4/20 12:30	115.3	↑0.9
4/20 12:40	116.0	↑0.7
4/20 12:50	116.4	↑0.4
4/20 13:00	116.6	↑0.2	満潮
4/20 13:10	116.5	↓-0.1
4/20 13:20	116.3	↓-0.2
4/20 13:30	116.0	↓-0.3
4/20 13:40	115.6	↓-0.4
4/20 13:50	115.1	↓-0.5
4/20 14:00	114.5	↓-0.6
4/20 14:10	113.9	↓-0.6
4/20 14:20	113.3	↓-0.6
4/20 14:30	112.6	↓-0.7
4/20 14:40	111.7	↓-0.9
4/20 14:50	110.8	↓-0.9
4/20 15:00	109.7	↓-1.1
4/20 15:10	108.4	↓-1.3
4/20 15:20	106.9	↓-1.5
4/20 15:30	105.1	↓-1.8
4/20 15:40	103.0	↓-2.1
4/20 15:50	100.6	↓-2.4
4/20 16:00	97.9	↓-2.7
4/20 16:10	94.9	↓-3.0
4/20 16:20	91.6	↓-3.3
4/20 16:30	88.1	↓-3.5
4/20 16:40	84.4	↓-3.7
4/20 16:50	80.6	↓-3.8
4/20 17:00	76.7	↓-3.9
4/20 17:10	72.9	↓-3.8
4/20 17:20	69.1	↓-3.8
4/20 17:30	65.6	↓-3.5
4/20 17:40	62.2	↓-3.4
4/20 17:50	59.2	↓-3.0
4/20 18:00	56.5	↓-2.7
4/20 18:10	54.2	↓-2.3
4/20 18:20	52.3	↓-1.9
4/20 18:30	50.8	↓-1.5
4/20 18:40	49.7	↓-1.1
4/20 18:50	49.0	↓-0.7
4/20 19:00	48.7	↓-0.3	干潮
4/20 19:10	48.6	↓-0.1
4/20 19:20	48.8	↑0.2
4/20 19:30	49.2	↑0.4
4/20 19:40	49.8	↑0.6
4/20 19:50	50.5	↑0.7
4/20 20:00	51.3	↑0.8
4/20 20:10	52.1	↑0.8
4/20 20:20	53.0	↑0.9
4/20 20:30	53.9	↑0.9
4/20 20:40	54.9	↑1.0
4/20 20:50	56.0	↑1.1
4/20 21:00	57.2	↑1.2
4/20 21:10	58.5	↑1.3
4/20 21:20	60.0	↑1.5
4/20 21:30	61.8	↑1.8
4/20 21:40	63.8	↑2.0
4/20 21:50	66.1	↑2.3
4/20 22:00	68.7	↑2.6
4/20 22:10	71.6	↑2.9
4/20 22:20	74.8	↑3.2
4/20 22:30	78.2	↑3.4
4/20 22:40	81.9	↑3.7
4/20 22:50	85.8	↑3.9
4/20 23:00	89.8	↑4.0
4/20 23:10	93.9	↑4.1	最大潮位差
4/20 23:20	97.9	↑4.0
4/20 23:30	101.8	↑3.9
4/20 23:40	105.5	↑3.7
4/20 23:50	109.0	↑3.5