21 (日)	11:55	03:29	20:21	14:50
	104cm	55cm	118cm	100cm
長潮 出 05:20 入 17:34 出 13:37 入 23:36

苫小牧（北海道）2053年09月21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
9/21 00:00	80.2	↓-2.3	最大潮位差
9/21 00:10	77.9	↓-2.3	最大潮位差
9/21 00:20	75.6	↓-2.3	最大潮位差
9/21 00:30	73.4	↓-2.2
9/21 00:40	71.3	↓-2.1
9/21 00:50	69.3	↓-2.0
9/21 01:00	67.4	↓-1.9
9/21 01:10	65.6	↓-1.8
9/21 01:20	63.9	↓-1.7
9/21 01:30	62.4	↓-1.5
9/21 01:40	61.0	↓-1.4
9/21 01:50	59.8	↓-1.2
9/21 02:00	58.7	↓-1.1
9/21 02:10	57.8	↓-0.9
9/21 02:20	57.0	↓-0.8
9/21 02:30	56.3	↓-0.7
9/21 02:40	55.7	↓-0.6
9/21 02:50	55.3	↓-0.4
9/21 03:00	55.0	↓-0.3
9/21 03:10	54.8	↓-0.2
9/21 03:20	54.6	↓-0.2	干潮
9/21 03:30	54.6	0
9/21 03:40	54.7	↑0.1
9/21 03:50	54.8	↑0.1
9/21 04:00	55.1	↑0.3
9/21 04:10	55.5	↑0.4
9/21 04:20	55.9	↑0.4
9/21 04:30	56.5	↑0.6
9/21 04:40	57.2	↑0.7
9/21 04:50	58.0	↑0.8
9/21 05:00	59.0	↑1.0
9/21 05:10	60.0	↑1.0
9/21 05:20	61.2	↑1.2
9/21 05:30	62.5	↑1.3
9/21 05:40	63.9	↑1.4
9/21 05:50	65.4	↑1.5
9/21 06:00	67.0	↑1.6
9/21 06:10	68.6	↑1.6
9/21 06:20	70.3	↑1.7
9/21 06:30	72.0	↑1.7
9/21 06:40	73.8	↑1.8
9/21 06:50	75.5	↑1.7
9/21 07:00	77.3	↑1.8
9/21 07:10	79.0	↑1.7
9/21 07:20	80.6	↑1.6
9/21 07:30	82.2	↑1.6
9/21 07:40	83.7	↑1.5
9/21 07:50	85.2	↑1.5
9/21 08:00	86.5	↑1.3
9/21 08:10	87.8	↑1.3
9/21 08:20	89.1	↑1.3
9/21 08:30	90.2	↑1.1
9/21 08:40	91.3	↑1.1
9/21 08:50	92.4	↑1.1
9/21 09:00	93.4	↑1.0
9/21 09:10	94.3	↑0.9
9/21 09:20	95.2	↑0.9
9/21 09:30	96.1	↑0.9
9/21 09:40	97.0	↑0.9
9/21 09:50	97.8	↑0.8
9/21 10:00	98.6	↑0.8
9/21 10:10	99.4	↑0.8
9/21 10:20	100.1	↑0.7
9/21 10:30	100.8	↑0.7
9/21 10:40	101.4	↑0.6
9/21 10:50	102.0	↑0.6
9/21 11:00	102.5	↑0.5
9/21 11:10	102.9	↑0.4
9/21 11:20	103.3	↑0.4
9/21 11:30	103.5	↑0.2
9/21 11:40	103.7	↑0.2
9/21 11:50	103.7	0	満潮
9/21 12:00	103.7	0
9/21 12:10	103.6	↓-0.1
9/21 12:20	103.5	↓-0.1
9/21 12:30	103.3	↓-0.2
9/21 12:40	103.0	↓-0.3
9/21 12:50	102.7	↓-0.3
9/21 13:00	102.3	↓-0.4
9/21 13:10	102.0	↓-0.3
9/21 13:20	101.6	↓-0.4
9/21 13:30	101.3	↓-0.3
9/21 13:40	101.0	↓-0.3
9/21 13:50	100.7	↓-0.3
9/21 14:00	100.5	↓-0.2
9/21 14:10	100.3	↓-0.2
9/21 14:20	100.1	↓-0.2
9/21 14:30	100.0	↓-0.1
9/21 14:40	99.9	↓-0.1	干潮
9/21 14:50	99.9	0	干潮
9/21 15:00	99.9	0
9/21 15:10	100.0	↑0.1
9/21 15:20	100.1	↑0.1
9/21 15:30	100.3	↑0.2
9/21 15:40	100.5	↑0.2
9/21 15:50	100.7	↑0.2
9/21 16:00	101.0	↑0.3
9/21 16:10	101.3	↑0.3
9/21 16:20	101.6	↑0.3
9/21 16:30	102.1	↑0.5
9/21 16:40	102.5	↑0.4
9/21 16:50	103.0	↑0.5
9/21 17:00	103.6	↑0.6
9/21 17:10	104.3	↑0.7
9/21 17:20	105.0	↑0.7
9/21 17:30	105.7	↑0.7
9/21 17:40	106.6	↑0.9
9/21 17:50	107.4	↑0.8
9/21 18:00	108.4	↑1.0
9/21 18:10	109.3	↑0.9
9/21 18:20	110.3	↑1.0
9/21 18:30	111.3	↑1.0
9/21 18:40	112.2	↑0.9
9/21 18:50	113.2	↑1.0
9/21 19:00	114.1	↑0.9
9/21 19:10	114.9	↑0.8
9/21 19:20	115.7	↑0.8
9/21 19:30	116.3	↑0.6
9/21 19:40	116.9	↑0.6
9/21 19:50	117.3	↑0.4
9/21 20:00	117.7	↑0.4
9/21 20:10	117.8	↑0.1
9/21 20:20	117.9	↑0.1	満潮
9/21 20:30	117.8	↓-0.1
9/21 20:40	117.6	↓-0.2
9/21 20:50	117.3	↓-0.3
9/21 21:00	116.9	↓-0.4
9/21 21:10	116.3	↓-0.6
9/21 21:20	115.7	↓-0.6
9/21 21:30	114.9	↓-0.8
9/21 21:40	114.1	↓-0.8
9/21 21:50	113.2	↓-0.9
9/21 22:00	112.2	↓-1.0
9/21 22:10	111.1	↓-1.1
9/21 22:20	110.0	↓-1.1
9/21 22:30	108.8	↓-1.2
9/21 22:40	107.5	↓-1.3
9/21 22:50	106.2	↓-1.3
9/21 23:00	104.9	↓-1.3
9/21 23:10	103.4	↓-1.5
9/21 23:20	101.9	↓-1.5
9/21 23:30	100.4	↓-1.5
9/21 23:40	98.7	↓-1.7
9/21 23:50	97.0	↓-1.7