20 (土)	02:10	07:50	13:31	19:58
	117cm	62cm	117cm	39cm
中潮 出 04:46 入 18:22 出 03:48 入 15:15

苫小牧（北海道）2058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	99.6	↑2.6
4/20 00:10	102.0	↑2.4
4/20 00:20	104.2	↑2.2
4/20 00:30	106.2	↑2.0
4/20 00:40	108.1	↑1.9
4/20 00:50	109.8	↑1.7
4/20 01:00	111.2	↑1.4
4/20 01:10	112.5	↑1.3
4/20 01:20	113.6	↑1.1
4/20 01:30	114.5	↑0.9
4/20 01:40	115.2	↑0.7
4/20 01:50	115.6	↑0.4
4/20 02:00	115.9	↑0.3	満潮
4/20 02:10	116.0	↑0.1	満潮
4/20 02:20	115.9	↓-0.1
4/20 02:30	115.5	↓-0.4
4/20 02:40	115.0	↓-0.5
4/20 02:50	114.2	↓-0.8
4/20 03:00	113.2	↓-1.0
4/20 03:10	112.0	↓-1.2
4/20 03:20	110.6	↓-1.4
4/20 03:30	109.0	↓-1.6
4/20 03:40	107.2	↓-1.8
4/20 03:50	105.2	↓-2.0
4/20 04:00	103.1	↓-2.1
4/20 04:10	100.8	↓-2.3
4/20 04:20	98.4	↓-2.4
4/20 04:30	95.9	↓-2.5
4/20 04:40	93.3	↓-2.6
4/20 04:50	90.6	↓-2.7
4/20 05:00	88.0	↓-2.6
4/20 05:10	85.3	↓-2.7
4/20 05:20	82.7	↓-2.6
4/20 05:30	80.2	↓-2.5
4/20 05:40	77.8	↓-2.4
4/20 05:50	75.4	↓-2.4
4/20 06:00	73.2	↓-2.2
4/20 06:10	71.2	↓-2.0
4/20 06:20	69.3	↓-1.9
4/20 06:30	67.6	↓-1.7
4/20 06:40	66.1	↓-1.5
4/20 06:50	64.8	↓-1.3
4/20 07:00	63.7	↓-1.1
4/20 07:10	62.8	↓-0.9
4/20 07:20	62.2	↓-0.6
4/20 07:30	61.7	↓-0.5
4/20 07:40	61.4	↓-0.3	干潮
4/20 07:50	61.3	↓-0.1	干潮
4/20 08:00	61.4	↑0.1
4/20 08:10	61.8	↑0.4
4/20 08:20	62.3	↑0.5
4/20 08:30	63.0	↑0.7
4/20 08:40	63.9	↑0.9
4/20 08:50	65.1	↑1.2
4/20 09:00	66.4	↑1.3
4/20 09:10	67.9	↑1.5
4/20 09:20	69.5	↑1.6
4/20 09:30	71.4	↑1.9
4/20 09:40	73.4	↑2.0
4/20 09:50	75.6	↑2.2
4/20 10:00	77.9	↑2.3
4/20 10:10	80.3	↑2.4
4/20 10:20	82.8	↑2.5
4/20 10:30	85.4	↑2.6
4/20 10:40	88.1	↑2.7
4/20 10:50	90.7	↑2.6
4/20 11:00	93.4	↑2.7
4/20 11:10	96.0	↑2.6
4/20 11:20	98.6	↑2.6
4/20 11:30	101.1	↑2.5
4/20 11:40	103.4	↑2.3
4/20 11:50	105.7	↑2.3
4/20 12:00	107.7	↑2.0
4/20 12:10	109.6	↑1.9
4/20 12:20	111.2	↑1.6
4/20 12:30	112.7	↑1.5
4/20 12:40	113.9	↑1.2
4/20 12:50	114.9	↑1.0
4/20 13:00	115.7	↑0.8
4/20 13:10	116.3	↑0.6
4/20 13:20	116.6	↑0.3
4/20 13:30	116.7	↑0.1	満潮
4/20 13:40	116.6	↓-0.1
4/20 13:50	116.3	↓-0.3
4/20 14:00	115.7	↓-0.6
4/20 14:10	115.0	↓-0.7
4/20 14:20	114.1	↓-0.9
4/20 14:30	112.9	↓-1.2
4/20 14:40	111.5	↓-1.4
4/20 14:50	110.0	↓-1.5
4/20 15:00	108.2	↓-1.8
4/20 15:10	106.3	↓-1.9
4/20 15:20	104.2	↓-2.1
4/20 15:30	101.8	↓-2.4
4/20 15:40	99.3	↓-2.5
4/20 15:50	96.6	↓-2.7
4/20 16:00	93.8	↓-2.8
4/20 16:10	90.8	↓-3.0
4/20 16:20	87.7	↓-3.1
4/20 16:30	84.5	↓-3.2
4/20 16:40	81.2	↓-3.3
4/20 16:50	77.8	↓-3.4
4/20 17:00	74.5	↓-3.3
4/20 17:10	71.1	↓-3.4
4/20 17:20	67.8	↓-3.3
4/20 17:30	64.5	↓-3.3
4/20 17:40	61.3	↓-3.2
4/20 17:50	58.3	↓-3.0
4/20 18:00	55.4	↓-2.9
4/20 18:10	52.7	↓-2.7
4/20 18:20	50.3	↓-2.4
4/20 18:30	48.0	↓-2.3
4/20 18:40	46.0	↓-2.0
4/20 18:50	44.2	↓-1.8
4/20 19:00	42.6	↓-1.6
4/20 19:10	41.4	↓-1.2
4/20 19:20	40.3	↓-1.1
4/20 19:30	39.6	↓-0.7
4/20 19:40	39.0	↓-0.6
4/20 19:50	38.8	↓-0.2	干潮
4/20 20:00	38.7	↓-0.1
4/20 20:10	38.9	↑0.2
4/20 20:20	39.4	↑0.5
4/20 20:30	40.0	↑0.6
4/20 20:40	40.9	↑0.9
4/20 20:50	42.0	↑1.1
4/20 21:00	43.4	↑1.4
4/20 21:10	44.9	↑1.5
4/20 21:20	46.7	↑1.8
4/20 21:30	48.7	↑2.0
4/20 21:40	51.0	↑2.3
4/20 21:50	53.4	↑2.4
4/20 22:00	56.0	↑2.6
4/20 22:10	58.8	↑2.8
4/20 22:20	61.8	↑3.0
4/20 22:30	65.0	↑3.2
4/20 22:40	68.3	↑3.3
4/20 22:50	71.7	↑3.4
4/20 23:00	75.2	↑3.5
4/20 23:10	78.7	↑3.5
4/20 23:20	82.2	↑3.5
4/20 23:30	85.8	↑3.6	最大潮位差
4/20 23:40	89.3	↑3.5
4/20 23:50	92.7	↑3.4