20 (水)	02:04	07:47	13:32	19:55
	116cm	62cm	115cm	43cm
中潮 出 04:46 入 18:21 出 03:45 入 15:02

苫小牧（北海道）2039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	100.6	↑2.4
4/20 00:10	102.8	↑2.2
4/20 00:20	104.8	↑2.0
4/20 00:30	106.6	↑1.8
4/20 00:40	108.3	↑1.7
4/20 00:50	109.9	↑1.6
4/20 01:00	111.2	↑1.3
4/20 01:10	112.3	↑1.1
4/20 01:20	113.3	↑1.0
4/20 01:30	114.1	↑0.8
4/20 01:40	114.6	↑0.5
4/20 01:50	115.0	↑0.4
4/20 02:00	115.2	↑0.2	満潮
4/20 02:10	115.1	↓-0.1
4/20 02:20	114.9	↓-0.2
4/20 02:30	114.4	↓-0.5
4/20 02:40	113.8	↓-0.6
4/20 02:50	112.9	↓-0.9
4/20 03:00	111.8	↓-1.1
4/20 03:10	110.5	↓-1.3
4/20 03:20	109.0	↓-1.5
4/20 03:30	107.3	↓-1.7
4/20 03:40	105.4	↓-1.9
4/20 03:50	103.4	↓-2.0
4/20 04:00	101.2	↓-2.2
4/20 04:10	98.9	↓-2.3
4/20 04:20	96.5	↓-2.4
4/20 04:30	94.0	↓-2.5
4/20 04:40	91.4	↓-2.6
4/20 04:50	88.9	↓-2.5
4/20 05:00	86.3	↓-2.6
4/20 05:10	83.8	↓-2.5
4/20 05:20	81.3	↓-2.5
4/20 05:30	78.9	↓-2.4
4/20 05:40	76.6	↓-2.3
4/20 05:50	74.4	↓-2.2
4/20 06:00	72.3	↓-2.1
4/20 06:10	70.4	↓-1.9
4/20 06:20	68.7	↓-1.7
4/20 06:30	67.1	↓-1.6
4/20 06:40	65.7	↓-1.4
4/20 06:50	64.5	↓-1.2
4/20 07:00	63.5	↓-1.0
4/20 07:10	62.7	↓-0.8
4/20 07:20	62.1	↓-0.6
4/20 07:30	61.7	↓-0.4
4/20 07:40	61.5	↓-0.2	干潮
4/20 07:50	61.4	↓-0.1
4/20 08:00	61.6	↑0.2
4/20 08:10	62.0	↑0.4
4/20 08:20	62.5	↑0.5
4/20 08:30	63.3	↑0.8
4/20 08:40	64.2	↑0.9
4/20 08:50	65.4	↑1.2
4/20 09:00	66.7	↑1.3
4/20 09:10	68.2	↑1.5
4/20 09:20	69.9	↑1.7
4/20 09:30	71.7	↑1.8
4/20 09:40	73.7	↑2.0
4/20 09:50	75.9	↑2.2
4/20 10:00	78.1	↑2.2
4/20 10:10	80.5	↑2.4
4/20 10:20	82.9	↑2.4
4/20 10:30	85.4	↑2.5
4/20 10:40	88.0	↑2.6
4/20 10:50	90.5	↑2.5
4/20 11:00	93.0	↑2.5
4/20 11:10	95.5	↑2.5
4/20 11:20	97.8	↑2.3
4/20 11:30	100.1	↑2.3
4/20 11:40	102.3	↑2.2
4/20 11:50	104.3	↑2.0
4/20 12:00	106.2	↑1.9
4/20 12:10	107.9	↑1.7
4/20 12:20	109.4	↑1.5
4/20 12:30	110.7	↑1.3
4/20 12:40	111.9	↑1.2
4/20 12:50	112.8	↑0.9
4/20 13:00	113.5	↑0.7
4/20 13:10	114.0	↑0.5
4/20 13:20	114.3	↑0.3
4/20 13:30	114.5	↑0.2	満潮
4/20 13:40	114.4	↓-0.1
4/20 13:50	114.1	↓-0.3
4/20 14:00	113.6	↓-0.5
4/20 14:10	112.9	↓-0.7
4/20 14:20	112.1	↓-0.8
4/20 14:30	111.0	↓-1.1
4/20 14:40	109.7	↓-1.3
4/20 14:50	108.3	↓-1.4
4/20 15:00	106.6	↓-1.7
4/20 15:10	104.8	↓-1.8
4/20 15:20	102.7	↓-2.1
4/20 15:30	100.5	↓-2.2
4/20 15:40	98.1	↓-2.4
4/20 15:50	95.5	↓-2.6
4/20 16:00	92.8	↓-2.7
4/20 16:10	90.0	↓-2.8
4/20 16:20	87.0	↓-3.0
4/20 16:30	84.0	↓-3.0
4/20 16:40	80.9	↓-3.1
4/20 16:50	77.7	↓-3.2
4/20 17:00	74.6	↓-3.1
4/20 17:10	71.5	↓-3.1
4/20 17:20	68.4	↓-3.1
4/20 17:30	65.4	↓-3.0
4/20 17:40	62.6	↓-2.8
4/20 17:50	59.8	↓-2.8
4/20 18:00	57.2	↓-2.6
4/20 18:10	54.8	↓-2.4
4/20 18:20	52.6	↓-2.2
4/20 18:30	50.6	↓-2.0
4/20 18:40	48.8	↓-1.8
4/20 18:50	47.2	↓-1.6
4/20 19:00	45.9	↓-1.3
4/20 19:10	44.8	↓-1.1
4/20 19:20	43.9	↓-0.9
4/20 19:30	43.2	↓-0.7
4/20 19:40	42.8	↓-0.4
4/20 19:50	42.6	↓-0.2	干潮
4/20 20:00	42.6	0
4/20 20:10	42.9	↑0.3
4/20 20:20	43.3	↑0.4
4/20 20:30	44.0	↑0.7
4/20 20:40	44.9	↑0.9
4/20 20:50	46.1	↑1.2
4/20 21:00	47.4	↑1.3
4/20 21:10	49.0	↑1.6
4/20 21:20	50.8	↑1.8
4/20 21:30	52.7	↑1.9
4/20 21:40	55.0	↑2.3
4/20 21:50	57.4	↑2.4
4/20 22:00	59.9	↑2.5
4/20 22:10	62.7	↑2.8
4/20 22:20	65.6	↑2.9
4/20 22:30	68.7	↑3.1
4/20 22:40	71.8	↑3.1
4/20 22:50	75.1	↑3.3
4/20 23:00	78.4	↑3.3
4/20 23:10	81.7	↑3.3
4/20 23:20	85.1	↑3.4	最大潮位差
4/20 23:30	88.4	↑3.3
4/20 23:40	91.6	↑3.2
4/20 23:50	94.8	↑3.2