20 (木)	10:41	05:17	-	17:32
	99cm	80cm	-	52cm
長潮 出 04:46 入 18:22 出 12:56 入 01:41

苫小牧（北海道）2051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	101.7	↓-0.2
4/20 00:10	101.3	↓-0.4
4/20 00:20	100.9	↓-0.4
4/20 00:30	100.3	↓-0.6
4/20 00:40	99.7	↓-0.6
4/20 00:50	98.9	↓-0.8
4/20 01:00	98.1	↓-0.8
4/20 01:10	97.2	↓-0.9
4/20 01:20	96.3	↓-0.9
4/20 01:30	95.3	↓-1.0
4/20 01:40	94.3	↓-1.0
4/20 01:50	93.3	↓-1.0
4/20 02:00	92.3	↓-1.0
4/20 02:10	91.3	↓-1.0
4/20 02:20	90.3	↓-1.0
4/20 02:30	89.4	↓-0.9
4/20 02:40	88.4	↓-1.0
4/20 02:50	87.5	↓-0.9
4/20 03:00	86.7	↓-0.8
4/20 03:10	85.8	↓-0.9
4/20 03:20	85.0	↓-0.8
4/20 03:30	84.3	↓-0.7
4/20 03:40	83.6	↓-0.7
4/20 03:50	82.9	↓-0.7
4/20 04:00	82.3	↓-0.6
4/20 04:10	81.7	↓-0.6
4/20 04:20	81.2	↓-0.5
4/20 04:30	80.8	↓-0.4
4/20 04:40	80.4	↓-0.4
4/20 04:50	80.2	↓-0.2
4/20 05:00	80.0	↓-0.2
4/20 05:10	79.9	↓-0.1	干潮
4/20 05:20	79.8	↓-0.1
4/20 05:30	79.9	↑0.1
4/20 05:40	80.1	↑0.2
4/20 05:50	80.4	↑0.3
4/20 06:00	80.8	↑0.4
4/20 06:10	81.3	↑0.5
4/20 06:20	81.9	↑0.6
4/20 06:30	82.5	↑0.6
4/20 06:40	83.3	↑0.8
4/20 06:50	84.1	↑0.8
4/20 07:00	85.0	↑0.9
4/20 07:10	85.9	↑0.9
4/20 07:20	86.8	↑0.9
4/20 07:30	87.8	↑1.0
4/20 07:40	88.7	↑0.9
4/20 07:50	89.7	↑1.0
4/20 08:00	90.6	↑0.9
4/20 08:10	91.5	↑0.9
4/20 08:20	92.4	↑0.9
4/20 08:30	93.2	↑0.8
4/20 08:40	93.9	↑0.7
4/20 08:50	94.7	↑0.8
4/20 09:00	95.3	↑0.6
4/20 09:10	95.9	↑0.6
4/20 09:20	96.5	↑0.6
4/20 09:30	97.0	↑0.5
4/20 09:40	97.4	↑0.4
4/20 09:50	97.8	↑0.4
4/20 10:00	98.1	↑0.3
4/20 10:10	98.3	↑0.2
4/20 10:20	98.5	↑0.2
4/20 10:30	98.6	↑0.1
4/20 10:40	98.6	0	満潮
4/20 10:50	98.6	0
4/20 11:00	98.5	↓-0.1
4/20 11:10	98.3	↓-0.2
4/20 11:20	98.0	↓-0.3
4/20 11:30	97.6	↓-0.4
4/20 11:40	97.0	↓-0.6
4/20 11:50	96.4	↓-0.6
4/20 12:00	95.7	↓-0.7
4/20 12:10	94.8	↓-0.9
4/20 12:20	93.8	↓-1.0
4/20 12:30	92.7	↓-1.1
4/20 12:40	91.5	↓-1.2
4/20 12:50	90.2	↓-1.3
4/20 13:00	88.8	↓-1.4
4/20 13:10	87.3	↓-1.5
4/20 13:20	85.7	↓-1.6
4/20 13:30	84.0	↓-1.7
4/20 13:40	82.2	↓-1.8
4/20 13:50	80.4	↓-1.8
4/20 14:00	78.6	↓-1.8
4/20 14:10	76.8	↓-1.8
4/20 14:20	74.9	↓-1.9
4/20 14:30	73.0	↓-1.9
4/20 14:40	71.2	↓-1.8
4/20 14:50	69.3	↓-1.9
4/20 15:00	67.5	↓-1.8
4/20 15:10	65.8	↓-1.7
4/20 15:20	64.1	↓-1.7
4/20 15:30	62.4	↓-1.7
4/20 15:40	60.9	↓-1.5
4/20 15:50	59.4	↓-1.5
4/20 16:00	58.1	↓-1.3
4/20 16:10	56.8	↓-1.3
4/20 16:20	55.6	↓-1.2
4/20 16:30	54.6	↓-1.0
4/20 16:40	53.7	↓-0.9
4/20 16:50	53.0	↓-0.7
4/20 17:00	52.4	↓-0.6
4/20 17:10	51.9	↓-0.5
4/20 17:20	51.6	↓-0.3
4/20 17:30	51.5	↓-0.1	干潮
4/20 17:40	51.6	↑0.1
4/20 17:50	51.8	↑0.2
4/20 18:00	52.3	↑0.5
4/20 18:10	52.9	↑0.6
4/20 18:20	53.6	↑0.7
4/20 18:30	54.6	↑1.0
4/20 18:40	55.7	↑1.1
4/20 18:50	57.0	↑1.3
4/20 19:00	58.4	↑1.4
4/20 19:10	59.9	↑1.5
4/20 19:20	61.6	↑1.7
4/20 19:30	63.4	↑1.8
4/20 19:40	65.2	↑1.8
4/20 19:50	67.2	↑2.0
4/20 20:00	69.2	↑2.0
4/20 20:10	71.3	↑2.1	最大潮位差
4/20 20:20	73.4	↑2.1	最大潮位差
4/20 20:30	75.5	↑2.1	最大潮位差
4/20 20:40	77.6	↑2.1	最大潮位差
4/20 20:50	79.7	↑2.1	最大潮位差
4/20 21:00	81.7	↑2.0
4/20 21:10	83.8	↑2.1	最大潮位差
4/20 21:20	85.8	↑2.0
4/20 21:30	87.8	↑2.0
4/20 21:40	89.6	↑1.8
4/20 21:50	91.5	↑1.9
4/20 22:00	93.2	↑1.7
4/20 22:10	94.9	↑1.7
4/20 22:20	96.5	↑1.6
4/20 22:30	98.0	↑1.5
4/20 22:40	99.4	↑1.4
4/20 22:50	100.7	↑1.3
4/20 23:00	101.8	↑1.1
4/20 23:10	102.9	↑1.1
4/20 23:20	103.8	↑0.9
4/20 23:30	104.6	↑0.8
4/20 23:40	105.3	↑0.7
4/20 23:50	105.9	↑0.6