21 (土)	13:11	03:51	20:06	13:26
	104cm	52cm	117cm	104cm
小潮 出 05:20 入 17:35 出 23:38 入 13:46

苫小牧（北海道）2030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	80.5	↓-2.1
9/21 00:10	78.3	↓-2.2	最大潮位差
9/21 00:20	76.2	↓-2.1
9/21 00:30	74.1	↓-2.1
9/21 00:40	72.0	↓-2.1
9/21 00:50	70.0	↓-2.0
9/21 01:00	68.1	↓-1.9
9/21 01:10	66.2	↓-1.9
9/21 01:20	64.5	↓-1.7
9/21 01:30	62.8	↓-1.7
9/21 01:40	61.3	↓-1.5
9/21 01:50	59.8	↓-1.5
9/21 02:00	58.5	↓-1.3
9/21 02:10	57.3	↓-1.2
9/21 02:20	56.2	↓-1.1
9/21 02:30	55.3	↓-0.9
9/21 02:40	54.5	↓-0.8
9/21 02:50	53.8	↓-0.7
9/21 03:00	53.2	↓-0.6
9/21 03:10	52.7	↓-0.5
9/21 03:20	52.3	↓-0.4
9/21 03:30	52.0	↓-0.3
9/21 03:40	51.9	↓-0.1
9/21 03:50	51.8	↓-0.1	干潮
9/21 04:00	51.8	0
9/21 04:10	52.0	↑0.2
9/21 04:20	52.3	↑0.3
9/21 04:30	52.7	↑0.4
9/21 04:40	53.2	↑0.5
9/21 04:50	53.8	↑0.6
9/21 05:00	54.6	↑0.8
9/21 05:10	55.5	↑0.9
9/21 05:20	56.5	↑1.0
9/21 05:30	57.7	↑1.2
9/21 05:40	58.9	↑1.2
9/21 05:50	60.3	↑1.4
9/21 06:00	61.8	↑1.5
9/21 06:10	63.4	↑1.6
9/21 06:20	65.0	↑1.6
9/21 06:30	66.8	↑1.8
9/21 06:40	68.5	↑1.7
9/21 06:50	70.3	↑1.8
9/21 07:00	72.1	↑1.8
9/21 07:10	73.9	↑1.8
9/21 07:20	75.7	↑1.8
9/21 07:30	77.4	↑1.7
9/21 07:40	79.1	↑1.7
9/21 07:50	80.7	↑1.6
9/21 08:00	82.3	↑1.6
9/21 08:10	83.8	↑1.5
9/21 08:20	85.2	↑1.4
9/21 08:30	86.6	↑1.4
9/21 08:40	87.9	↑1.3
9/21 08:50	89.1	↑1.2
9/21 09:00	90.3	↑1.2
9/21 09:10	91.4	↑1.1
9/21 09:20	92.4	↑1.0
9/21 09:30	93.4	↑1.0
9/21 09:40	94.4	↑1.0
9/21 09:50	95.3	↑0.9
9/21 10:00	96.2	↑0.9
9/21 10:10	97.0	↑0.8
9/21 10:20	97.8	↑0.8
9/21 10:30	98.6	↑0.8
9/21 10:40	99.4	↑0.8
9/21 10:50	100.0	↑0.6
9/21 11:00	100.7	↑0.7
9/21 11:10	101.3	↑0.6
9/21 11:20	101.8	↑0.5
9/21 11:30	102.3	↑0.5
9/21 11:40	102.7	↑0.4
9/21 11:50	103.0	↑0.3
9/21 12:00	103.3	↑0.3
9/21 12:10	103.5	↑0.2
9/21 12:20	103.7	↑0.2
9/21 12:30	103.8	↑0.1
9/21 12:40	103.9	↑0.1
9/21 12:50	103.9	0
9/21 13:00	104.0	↑0.1
9/21 13:10	104.0	0	満潮
9/21 13:20	104.0	0	干潮
9/21 13:30	104.0	0
9/21 13:40	104.0	0
9/21 13:50	104.0	0
9/21 14:00	104.0	0
9/21 14:10	104.1	↑0.1
9/21 14:20	104.2	↑0.1
9/21 14:30	104.4	↑0.2
9/21 14:40	104.5	↑0.1
9/21 14:50	104.7	↑0.2
9/21 15:00	104.9	↑0.2
9/21 15:10	105.2	↑0.3
9/21 15:20	105.5	↑0.3
9/21 15:30	105.7	↑0.2
9/21 15:40	106.0	↑0.3
9/21 15:50	106.4	↑0.4
9/21 16:00	106.7	↑0.3
9/21 16:10	107.0	↑0.3
9/21 16:20	107.4	↑0.4
9/21 16:30	107.7	↑0.3
9/21 16:40	108.1	↑0.4
9/21 16:50	108.5	↑0.4
9/21 17:00	108.9	↑0.4
9/21 17:10	109.3	↑0.4
9/21 17:20	109.8	↑0.5
9/21 17:30	110.2	↑0.4
9/21 17:40	110.7	↑0.5
9/21 17:50	111.3	↑0.6
9/21 18:00	111.8	↑0.5
9/21 18:10	112.3	↑0.5
9/21 18:20	112.9	↑0.6
9/21 18:30	113.4	↑0.5
9/21 18:40	114.0	↑0.6
9/21 18:50	114.5	↑0.5
9/21 19:00	115.0	↑0.5
9/21 19:10	115.4	↑0.4
9/21 19:20	115.8	↑0.4
9/21 19:30	116.1	↑0.3
9/21 19:40	116.4	↑0.3
9/21 19:50	116.6	↑0.2
9/21 20:00	116.7	↑0.1	満潮
9/21 20:10	116.7	0
9/21 20:20	116.6	↓-0.1
9/21 20:30	116.4	↓-0.2
9/21 20:40	116.1	↓-0.3
9/21 20:50	115.7	↓-0.4
9/21 21:00	115.3	↓-0.4
9/21 21:10	114.7	↓-0.6
9/21 21:20	114.1	↓-0.6
9/21 21:30	113.4	↓-0.7
9/21 21:40	112.6	↓-0.8
9/21 21:50	111.7	↓-0.9
9/21 22:00	110.8	↓-0.9
9/21 22:10	109.8	↓-1.0
9/21 22:20	108.8	↓-1.0
9/21 22:30	107.7	↓-1.1
9/21 22:40	106.6	↓-1.1
9/21 22:50	105.4	↓-1.2
9/21 23:00	104.2	↓-1.2
9/21 23:10	102.9	↓-1.3
9/21 23:20	101.6	↓-1.3
9/21 23:30	100.2	↓-1.4
9/21 23:40	98.7	↓-1.5
9/21 23:50	97.2	↓-1.5