20 (月)	01:54	08:08	14:16	20:15
	120cm	47cm	121cm	44cm
中潮 出 04:46 入 18:22 出 16:08 入 03:47

苫小牧（北海道）2054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	104.4	↑2.8
4/20 00:10	107.0	↑2.6
4/20 00:20	109.4	↑2.4
4/20 00:30	111.5	↑2.1
4/20 00:40	113.4	↑1.9
4/20 00:50	115.0	↑1.6
4/20 01:00	116.4	↑1.4
4/20 01:10	117.6	↑1.2
4/20 01:20	118.5	↑0.9
4/20 01:30	119.1	↑0.6
4/20 01:40	119.5	↑0.4
4/20 01:50	119.7	↑0.2	満潮
4/20 02:00	119.7	0
4/20 02:10	119.4	↓-0.3
4/20 02:20	118.9	↓-0.5
4/20 02:30	118.2	↓-0.7
4/20 02:40	117.4	↓-0.8
4/20 02:50	116.3	↓-1.1
4/20 03:00	115.0	↓-1.3
4/20 03:10	113.4	↓-1.6
4/20 03:20	111.7	↓-1.7
4/20 03:30	109.8	↓-1.9
4/20 03:40	107.7	↓-2.1
4/20 03:50	105.4	↓-2.3
4/20 04:00	102.9	↓-2.5
4/20 04:10	100.2	↓-2.7
4/20 04:20	97.4	↓-2.8
4/20 04:30	94.4	↓-3.0
4/20 04:40	91.3	↓-3.1
4/20 04:50	88.1	↓-3.2
4/20 05:00	84.8	↓-3.3
4/20 05:10	81.5	↓-3.3
4/20 05:20	78.3	↓-3.2
4/20 05:30	75.0	↓-3.3
4/20 05:40	71.8	↓-3.2
4/20 05:50	68.7	↓-3.1
4/20 06:00	65.7	↓-3.0
4/20 06:10	62.9	↓-2.8
4/20 06:20	60.3	↓-2.6
4/20 06:30	57.8	↓-2.5
4/20 06:40	55.6	↓-2.2
4/20 06:50	53.6	↓-2.0
4/20 07:00	51.9	↓-1.7
4/20 07:10	50.4	↓-1.5
4/20 07:20	49.2	↓-1.2
4/20 07:30	48.2	↓-1.0
4/20 07:40	47.4	↓-0.8
4/20 07:50	46.9	↓-0.5
4/20 08:00	46.6	↓-0.3	干潮
4/20 08:10	46.5	↓-0.1
4/20 08:20	46.7	↑0.2
4/20 08:30	47.1	↑0.4
4/20 08:40	47.7	↑0.6
4/20 08:50	48.5	↑0.8
4/20 09:00	49.6	↑1.1
4/20 09:10	50.8	↑1.2
4/20 09:20	52.3	↑1.5
4/20 09:30	54.0	↑1.7
4/20 09:40	55.9	↑1.9
4/20 09:50	58.1	↑2.2
4/20 10:00	60.4	↑2.3
4/20 10:10	63.0	↑2.6
4/20 10:20	65.7	↑2.7
4/20 10:30	68.6	↑2.9
4/20 10:40	71.7	↑3.1
4/20 10:50	74.9	↑3.2
4/20 11:00	78.2	↑3.3
4/20 11:10	81.6	↑3.4
4/20 11:20	85.0	↑3.4
4/20 11:30	88.4	↑3.4
4/20 11:40	91.8	↑3.4
4/20 11:50	95.1	↑3.3
4/20 12:00	98.3	↑3.2
4/20 12:10	101.4	↑3.1
4/20 12:20	104.3	↑2.9
4/20 12:30	107.0	↑2.7
4/20 12:40	109.5	↑2.5
4/20 12:50	111.8	↑2.3
4/20 13:00	113.8	↑2.0
4/20 13:10	115.6	↑1.8
4/20 13:20	117.1	↑1.5
4/20 13:30	118.3	↑1.2
4/20 13:40	119.3	↑1.0
4/20 13:50	120.0	↑0.7
4/20 14:00	120.5	↑0.5
4/20 14:10	120.7	↑0.2	満潮
4/20 14:20	120.7	0
4/20 14:30	120.5	↓-0.2
4/20 14:40	120.0	↓-0.5
4/20 14:50	119.3	↓-0.7
4/20 15:00	118.4	↓-0.9
4/20 15:10	117.2	↓-1.2
4/20 15:20	115.8	↓-1.4
4/20 15:30	114.2	↓-1.6
4/20 15:40	112.3	↓-1.9
4/20 15:50	110.3	↓-2.0
4/20 16:00	108.0	↓-2.3
4/20 16:10	105.4	↓-2.6
4/20 16:20	102.7	↓-2.7
4/20 16:30	99.7	↓-3.0
4/20 16:40	96.6	↓-3.1
4/20 16:50	93.3	↓-3.3
4/20 17:00	89.9	↓-3.4
4/20 17:10	86.3	↓-3.6
4/20 17:20	82.7	↓-3.6
4/20 17:30	79.1	↓-3.6
4/20 17:40	75.5	↓-3.6
4/20 17:50	71.9	↓-3.6
4/20 18:00	68.4	↓-3.5
4/20 18:10	65.0	↓-3.4
4/20 18:20	61.8	↓-3.2
4/20 18:30	58.8	↓-3.0
4/20 18:40	56.0	↓-2.8
4/20 18:50	53.4	↓-2.6
4/20 19:00	51.1	↓-2.3
4/20 19:10	49.1	↓-2.0
4/20 19:20	47.4	↓-1.7
4/20 19:30	46.0	↓-1.4
4/20 19:40	44.9	↓-1.1
4/20 19:50	44.1	↓-0.8
4/20 20:00	43.6	↓-0.5
4/20 20:10	43.3	↓-0.3	干潮
4/20 20:20	43.4	↑0.1
4/20 20:30	43.7	↑0.3
4/20 20:40	44.2	↑0.5
4/20 20:50	45.0	↑0.8
4/20 21:00	46.1	↑1.1
4/20 21:10	47.4	↑1.3
4/20 21:20	48.9	↑1.5
4/20 21:30	50.7	↑1.8
4/20 21:40	52.7	↑2.0
4/20 21:50	54.9	↑2.2
4/20 22:00	57.3	↑2.4
4/20 22:10	60.0	↑2.7
4/20 22:20	62.8	↑2.8
4/20 22:30	65.9	↑3.1
4/20 22:40	69.2	↑3.3
4/20 22:50	72.6	↑3.4
4/20 23:00	76.2	↑3.6
4/20 23:10	79.8	↑3.6
4/20 23:20	83.6	↑3.8	最大潮位差
4/20 23:30	87.4	↑3.8	最大潮位差
4/20 23:40	91.2	↑3.8	最大潮位差
4/20 23:50	94.9	↑3.7