20 (月)	02:18	08:15	14:05	20:14
	118cm	54cm	116cm	46cm
中潮 出 04:45 入 18:22 出 03:54 入 15:28

苫小牧（北海道）2020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	99.2	↑2.6
4/20 00:10	101.7	↑2.5
4/20 00:20	104.1	↑2.4
4/20 00:30	106.2	↑2.1
4/20 00:40	108.2	↑2.0
4/20 00:50	110.1	↑1.9
4/20 01:00	111.7	↑1.6
4/20 01:10	113.1	↑1.4
4/20 01:20	114.3	↑1.2
4/20 01:30	115.4	↑1.1
4/20 01:40	116.2	↑0.8
4/20 01:50	116.9	↑0.7
4/20 02:00	117.3	↑0.4
4/20 02:10	117.5	↑0.2	満潮
4/20 02:20	117.6	↑0.1
4/20 02:30	117.4	↓-0.2
4/20 02:40	117.0	↓-0.4
4/20 02:50	116.4	↓-0.6
4/20 03:00	115.6	↓-0.8
4/20 03:10	114.5	↓-1.1
4/20 03:20	113.2	↓-1.3
4/20 03:30	111.7	↓-1.5
4/20 03:40	110.0	↓-1.7
4/20 03:50	108.1	↓-1.9
4/20 04:00	105.9	↓-2.2
4/20 04:10	103.6	↓-2.3
4/20 04:20	101.1	↓-2.5
4/20 04:30	98.5	↓-2.6
4/20 04:40	95.7	↓-2.8
4/20 04:50	92.8	↓-2.9
4/20 05:00	89.8	↓-3.0
4/20 05:10	86.8	↓-3.0
4/20 05:20	83.8	↓-3.0
4/20 05:30	80.8	↓-3.0
4/20 05:40	77.9	↓-2.9
4/20 05:50	75.1	↓-2.8
4/20 06:00	72.3	↓-2.8
4/20 06:10	69.7	↓-2.6
4/20 06:20	67.2	↓-2.5
4/20 06:30	65.0	↓-2.2
4/20 06:40	62.9	↓-2.1
4/20 06:50	61.0	↓-1.9
4/20 07:00	59.3	↓-1.7
4/20 07:10	57.8	↓-1.5
4/20 07:20	56.5	↓-1.3
4/20 07:30	55.5	↓-1.0
4/20 07:40	54.6	↓-0.9
4/20 07:50	54.0	↓-0.6
4/20 08:00	53.6	↓-0.4
4/20 08:10	53.4	↓-0.2	干潮
4/20 08:20	53.5	↑0.1
4/20 08:30	53.7	↑0.2
4/20 08:40	54.2	↑0.5
4/20 08:50	54.9	↑0.7
4/20 09:00	55.7	↑0.8
4/20 09:10	56.8	↑1.1
4/20 09:20	58.2	↑1.4
4/20 09:30	59.7	↑1.5
4/20 09:40	61.4	↑1.7
4/20 09:50	63.4	↑2.0
4/20 10:00	65.5	↑2.1
4/20 10:10	67.9	↑2.4
4/20 10:20	70.3	↑2.4
4/20 10:30	73.0	↑2.7
4/20 10:40	75.7	↑2.7
4/20 10:50	78.6	↑2.9
4/20 11:00	81.5	↑2.9
4/20 11:10	84.4	↑2.9
4/20 11:20	87.4	↑3.0
4/20 11:30	90.3	↑2.9
4/20 11:40	93.1	↑2.8
4/20 11:50	95.9	↑2.8
4/20 12:00	98.6	↑2.7
4/20 12:10	101.1	↑2.5
4/20 12:20	103.4	↑2.3
4/20 12:30	105.5	↑2.1
4/20 12:40	107.5	↑2.0
4/20 12:50	109.2	↑1.7
4/20 13:00	110.7	↑1.5
4/20 13:10	112.0	↑1.3
4/20 13:20	113.0	↑1.0
4/20 13:30	113.9	↑0.9
4/20 13:40	114.5	↑0.6
4/20 13:50	114.9	↑0.4
4/20 14:00	115.1	↑0.2	満潮
4/20 14:10	115.0	↓-0.1
4/20 14:20	114.8	↓-0.2
4/20 14:30	114.4	↓-0.4
4/20 14:40	113.7	↓-0.7
4/20 14:50	112.9	↓-0.8
4/20 15:00	111.8	↓-1.1
4/20 15:10	110.6	↓-1.2
4/20 15:20	109.1	↓-1.5
4/20 15:30	107.5	↓-1.6
4/20 15:40	105.7	↓-1.8
4/20 15:50	103.6	↓-2.1
4/20 16:00	101.4	↓-2.2
4/20 16:10	98.9	↓-2.5
4/20 16:20	96.4	↓-2.5
4/20 16:30	93.6	↓-2.8
4/20 16:40	90.7	↓-2.9
4/20 16:50	87.7	↓-3.0
4/20 17:00	84.6	↓-3.1
4/20 17:10	81.5	↓-3.1
4/20 17:20	78.3	↓-3.2
4/20 17:30	75.1	↓-3.2
4/20 17:40	72.0	↓-3.1
4/20 17:50	68.9	↓-3.1
4/20 18:00	65.9	↓-3.0
4/20 18:10	63.1	↓-2.8
4/20 18:20	60.5	↓-2.6
4/20 18:30	58.0	↓-2.5
4/20 18:40	55.7	↓-2.3
4/20 18:50	53.6	↓-2.1
4/20 19:00	51.8	↓-1.8
4/20 19:10	50.2	↓-1.6
4/20 19:20	48.8	↓-1.4
4/20 19:30	47.7	↓-1.1
4/20 19:40	46.9	↓-0.8
4/20 19:50	46.2	↓-0.7
4/20 20:00	45.8	↓-0.4
4/20 20:10	45.7	↓-0.1	干潮
4/20 20:20	45.7	0
4/20 20:30	46.0	↑0.3
4/20 20:40	46.4	↑0.4
4/20 20:50	47.1	↑0.7
4/20 21:00	48.0	↑0.9
4/20 21:10	49.1	↑1.1
4/20 21:20	50.5	↑1.4
4/20 21:30	52.0	↑1.5
4/20 21:40	53.7	↑1.7
4/20 21:50	55.7	↑2.0
4/20 22:00	57.9	↑2.2
4/20 22:10	60.2	↑2.3
4/20 22:20	62.8	↑2.6
4/20 22:30	65.5	↑2.7
4/20 22:40	68.5	↑3.0
4/20 22:50	71.5	↑3.0
4/20 23:00	74.7	↑3.2
4/20 23:10	78.0	↑3.3
4/20 23:20	81.4	↑3.4	最大潮位差
4/20 23:30	84.8	↑3.4	最大潮位差
4/20 23:40	88.2	↑3.4	最大潮位差
4/20 23:50	91.6	↑3.4	最大潮位差