20 (日)	10:59	02:33	19:33	14:21
	104cm	45cm	109cm	98cm
小潮 出 05:52 入 16:46 出 23:26 入 12:53

苫小牧（北海道）2030年10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
10/20 00:00	62.0	↓-2.1
10/20 00:10	59.9	↓-2.1
10/20 00:20	57.9	↓-2.0
10/20 00:30	56.1	↓-1.8
10/20 00:40	54.3	↓-1.8
10/20 00:50	52.6	↓-1.7
10/20 01:00	51.1	↓-1.5
10/20 01:10	49.7	↓-1.4
10/20 01:20	48.5	↓-1.2
10/20 01:30	47.5	↓-1.0
10/20 01:40	46.6	↓-0.9
10/20 01:50	45.9	↓-0.7
10/20 02:00	45.4	↓-0.5
10/20 02:10	45.0	↓-0.4
10/20 02:20	44.7	↓-0.3
10/20 02:30	44.6	↓-0.1	干潮
10/20 02:40	44.7	↑0.1
10/20 02:50	44.8	↑0.1
10/20 03:00	45.1	↑0.3
10/20 03:10	45.6	↑0.5
10/20 03:20	46.1	↑0.5
10/20 03:30	46.7	↑0.6
10/20 03:40	47.5	↑0.8
10/20 03:50	48.4	↑0.9
10/20 04:00	49.3	↑0.9
10/20 04:10	50.4	↑1.1
10/20 04:20	51.7	↑1.3
10/20 04:30	53.0	↑1.3
10/20 04:40	54.5	↑1.5
10/20 04:50	56.1	↑1.6
10/20 05:00	57.8	↑1.7
10/20 05:10	59.6	↑1.8
10/20 05:20	61.5	↑1.9
10/20 05:30	63.6	↑2.1
10/20 05:40	65.7	↑2.1
10/20 05:50	67.9	↑2.2
10/20 06:00	70.1	↑2.2
10/20 06:10	72.3	↑2.2
10/20 06:20	74.6	↑2.3	最大潮位差
10/20 06:30	76.9	↑2.3	最大潮位差
10/20 06:40	79.1	↑2.2
10/20 06:50	81.2	↑2.1
10/20 07:00	83.3	↑2.1
10/20 07:10	85.3	↑2.0
10/20 07:20	87.2	↑1.9
10/20 07:30	88.9	↑1.7
10/20 07:40	90.6	↑1.7
10/20 07:50	92.1	↑1.5
10/20 08:00	93.4	↑1.3
10/20 08:10	94.7	↑1.3
10/20 08:20	95.8	↑1.1
10/20 08:30	96.9	↑1.1
10/20 08:40	97.8	↑0.9
10/20 08:50	98.6	↑0.8
10/20 09:00	99.4	↑0.8
10/20 09:10	100.0	↑0.6
10/20 09:20	100.7	↑0.7
10/20 09:30	101.2	↑0.5
10/20 09:40	101.7	↑0.5
10/20 09:50	102.1	↑0.4
10/20 10:00	102.5	↑0.4
10/20 10:10	102.9	↑0.4
10/20 10:20	103.1	↑0.2
10/20 10:30	103.4	↑0.3
10/20 10:40	103.5	↑0.1
10/20 10:50	103.6	↑0.1	満潮
10/20 11:00	103.6	0
10/20 11:10	103.6	0
10/20 11:20	103.5	↓-0.1
10/20 11:30	103.3	↓-0.2
10/20 11:40	103.0	↓-0.3
10/20 11:50	102.7	↓-0.3
10/20 12:00	102.3	↓-0.4
10/20 12:10	101.9	↓-0.4
10/20 12:20	101.5	↓-0.4
10/20 12:30	101.0	↓-0.5
10/20 12:40	100.5	↓-0.5
10/20 12:50	100.1	↓-0.4
10/20 13:00	99.6	↓-0.5
10/20 13:10	99.2	↓-0.4
10/20 13:20	98.8	↓-0.4
10/20 13:30	98.5	↓-0.3
10/20 13:40	98.2	↓-0.3
10/20 13:50	98.0	↓-0.2
10/20 14:00	97.9	↓-0.1
10/20 14:10	97.8	↓-0.1
10/20 14:20	97.8	0	干潮
10/20 14:30	97.8	0
10/20 14:40	97.8	0
10/20 14:50	98.0	↑0.2
10/20 15:00	98.1	↑0.1
10/20 15:10	98.3	↑0.2
10/20 15:20	98.5	↑0.2
10/20 15:30	98.7	↑0.2
10/20 15:40	99.0	↑0.3
10/20 15:50	99.3	↑0.3
10/20 16:00	99.5	↑0.2
10/20 16:10	99.8	↑0.3
10/20 16:20	100.2	↑0.4
10/20 16:30	100.5	↑0.3
10/20 16:40	100.9	↑0.4
10/20 16:50	101.2	↑0.3
10/20 17:00	101.7	↑0.5
10/20 17:10	102.1	↑0.4
10/20 17:20	102.6	↑0.5
10/20 17:30	103.1	↑0.5
10/20 17:40	103.6	↑0.5
10/20 17:50	104.2	↑0.6
10/20 18:00	104.7	↑0.5
10/20 18:10	105.3	↑0.6
10/20 18:20	105.8	↑0.5
10/20 18:30	106.3	↑0.5
10/20 18:40	106.8	↑0.5
10/20 18:50	107.2	↑0.4
10/20 19:00	107.6	↑0.4
10/20 19:10	107.8	↑0.2
10/20 19:20	108.0	↑0.2
10/20 19:30	108.1	↑0.1	満潮
10/20 19:40	108.0	↓-0.1
10/20 19:50	107.9	↓-0.1
10/20 20:00	107.6	↓-0.3
10/20 20:10	107.2	↓-0.4
10/20 20:20	106.7	↓-0.5
10/20 20:30	106.1	↓-0.6
10/20 20:40	105.4	↓-0.7
10/20 20:50	104.6	↓-0.8
10/20 21:00	103.7	↓-0.9
10/20 21:10	102.7	↓-1.0
10/20 21:20	101.6	↓-1.1
10/20 21:30	100.5	↓-1.1
10/20 21:40	99.4	↓-1.1
10/20 21:50	98.2	↓-1.2
10/20 22:00	96.9	↓-1.3
10/20 22:10	95.6	↓-1.3
10/20 22:20	94.3	↓-1.3
10/20 22:30	93.0	↓-1.3
10/20 22:40	91.6	↓-1.4
10/20 22:50	90.1	↓-1.5
10/20 23:00	88.7	↓-1.4
10/20 23:10	87.2	↓-1.5
10/20 23:20	85.6	↓-1.6
10/20 23:30	84.0	↓-1.6
10/20 23:40	82.4	↓-1.6
10/20 23:50	80.7	↓-1.7