20 (日)	06:50	00:49	-	15:42
	117cm	96cm	-	40cm
小潮 出 04:46 入 18:22 出 10:39 入 01:32

苫小牧（北海道）2059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	96.1	↓-0.2
4/20 00:10	95.8	↓-0.3
4/20 00:20	95.6	↓-0.2
4/20 00:30	95.5	↓-0.1
4/20 00:40	95.4	↓-0.1	干潮
4/20 00:50	95.4	0
4/20 01:00	95.4	0
4/20 01:10	95.6	↑0.2
4/20 01:20	95.8	↑0.2
4/20 01:30	96.1	↑0.3
4/20 01:40	96.5	↑0.4
4/20 01:50	96.9	↑0.4
4/20 02:00	97.4	↑0.5
4/20 02:10	98.0	↑0.6
4/20 02:20	98.6	↑0.6
4/20 02:30	99.2	↑0.6
4/20 02:40	99.8	↑0.6
4/20 02:50	100.5	↑0.7
4/20 03:00	101.2	↑0.7
4/20 03:10	101.9	↑0.7
4/20 03:20	102.5	↑0.6
4/20 03:30	103.2	↑0.7
4/20 03:40	103.9	↑0.7
4/20 03:50	104.6	↑0.7
4/20 04:00	105.3	↑0.7
4/20 04:10	106.0	↑0.7
4/20 04:20	106.8	↑0.8
4/20 04:30	107.5	↑0.7
4/20 04:40	108.3	↑0.8
4/20 04:50	109.1	↑0.8
4/20 05:00	109.9	↑0.8
4/20 05:10	110.7	↑0.8
4/20 05:20	111.5	↑0.8
4/20 05:30	112.3	↑0.8
4/20 05:40	113.1	↑0.8
4/20 05:50	113.8	↑0.7
4/20 06:00	114.5	↑0.7
4/20 06:10	115.0	↑0.5
4/20 06:20	115.5	↑0.5
4/20 06:30	115.8	↑0.3
4/20 06:40	116.0	↑0.2	満潮
4/20 06:50	116.1	↑0.1	満潮
4/20 07:00	116.0	↓-0.1
4/20 07:10	115.7	↓-0.3
4/20 07:20	115.3	↓-0.4
4/20 07:30	114.7	↓-0.6
4/20 07:40	113.9	↓-0.8
4/20 07:50	113.0	↓-0.9
4/20 08:00	112.0	↓-1.0
4/20 08:10	110.8	↓-1.2
4/20 08:20	109.5	↓-1.3
4/20 08:30	108.1	↓-1.4
4/20 08:40	106.6	↓-1.5
4/20 08:50	105.0	↓-1.6
4/20 09:00	103.4	↓-1.6
4/20 09:10	101.7	↓-1.7
4/20 09:20	100.0	↓-1.7
4/20 09:30	98.2	↓-1.8
4/20 09:40	96.4	↓-1.8
4/20 09:50	94.6	↓-1.8
4/20 10:00	92.8	↓-1.8
4/20 10:10	90.9	↓-1.9
4/20 10:20	88.9	↓-2.0
4/20 10:30	87.0	↓-1.9
4/20 10:40	85.0	↓-2.0
4/20 10:50	82.9	↓-2.1
4/20 11:00	80.8	↓-2.1
4/20 11:10	78.6	↓-2.2
4/20 11:20	76.5	↓-2.1
4/20 11:30	74.2	↓-2.3	最大潮位差
4/20 11:40	72.0	↓-2.2
4/20 11:50	69.7	↓-2.3	最大潮位差
4/20 12:00	67.5	↓-2.2
4/20 12:10	65.2	↓-2.3	最大潮位差
4/20 12:20	63.0	↓-2.2
4/20 12:30	60.8	↓-2.2
4/20 12:40	58.7	↓-2.1
4/20 12:50	56.7	↓-2.0
4/20 13:00	54.7	↓-2.0
4/20 13:10	52.9	↓-1.8
4/20 13:20	51.1	↓-1.8
4/20 13:30	49.5	↓-1.6
4/20 13:40	48.0	↓-1.5
4/20 13:50	46.7	↓-1.3
4/20 14:00	45.4	↓-1.3
4/20 14:10	44.3	↓-1.1
4/20 14:20	43.3	↓-1.0
4/20 14:30	42.5	↓-0.8
4/20 14:40	41.7	↓-0.8
4/20 14:50	41.1	↓-0.6
4/20 15:00	40.6	↓-0.5
4/20 15:10	40.2	↓-0.4
4/20 15:20	39.9	↓-0.3
4/20 15:30	39.7	↓-0.2
4/20 15:40	39.6	↓-0.1	干潮
4/20 15:50	39.7	↑0.1
4/20 16:00	39.8	↑0.1
4/20 16:10	40.1	↑0.3
4/20 16:20	40.6	↑0.5
4/20 16:30	41.2	↑0.6
4/20 16:40	41.9	↑0.7
4/20 16:50	42.7	↑0.8
4/20 17:00	43.8	↑1.1
4/20 17:10	44.9	↑1.1
4/20 17:20	46.2	↑1.3
4/20 17:30	47.7	↑1.5
4/20 17:40	49.3	↑1.6
4/20 17:50	50.9	↑1.6
4/20 18:00	52.7	↑1.8
4/20 18:10	54.6	↑1.9
4/20 18:20	56.6	↑2.0
4/20 18:30	58.5	↑1.9
4/20 18:40	60.6	↑2.1
4/20 18:50	62.6	↑2.0
4/20 19:00	64.6	↑2.0
4/20 19:10	66.6	↑2.0
4/20 19:20	68.6	↑2.0
4/20 19:30	70.5	↑1.9
4/20 19:40	72.3	↑1.8
4/20 19:50	74.1	↑1.8
4/20 20:00	75.8	↑1.7
4/20 20:10	77.4	↑1.6
4/20 20:20	79.0	↑1.6
4/20 20:30	80.5	↑1.5
4/20 20:40	82.0	↑1.5
4/20 20:50	83.4	↑1.4
4/20 21:00	84.7	↑1.3
4/20 21:10	86.0	↑1.3
4/20 21:20	87.3	↑1.3
4/20 21:30	88.5	↑1.2
4/20 21:40	89.7	↑1.2
4/20 21:50	90.8	↑1.1
4/20 22:00	91.9	↑1.1
4/20 22:10	92.9	↑1.0
4/20 22:20	93.9	↑1.0
4/20 22:30	94.9	↑1.0
4/20 22:40	95.7	↑0.8
4/20 22:50	96.5	↑0.8
4/20 23:00	97.2	↑0.7
4/20 23:10	97.9	↑0.7
4/20 23:20	98.4	↑0.5
4/20 23:30	98.9	↑0.5
4/20 23:40	99.3	↑0.4
4/20 23:50	99.6	↑0.3