20 (水)	05:45	11:43	17:37	23:56
	130cm	52cm	127cm	39cm
中潮 出 06:24 入 17:13 出 21:16 入 08:18

苫小牧（北海道）2041年02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
2/20 00:00	29.0	↑0.9
2/20 00:10	30.2	↑1.2
2/20 00:20	31.6	↑1.4
2/20 00:30	33.4	↑1.8
2/20 00:40	35.4	↑2.0
2/20 00:50	37.6	↑2.2
2/20 01:00	40.0	↑2.4
2/20 01:10	42.7	↑2.7
2/20 01:20	45.5	↑2.8
2/20 01:30	48.6	↑3.1
2/20 01:40	51.8	↑3.2
2/20 01:50	55.3	↑3.5
2/20 02:00	58.9	↑3.6
2/20 02:10	62.7	↑3.8
2/20 02:20	66.7	↑4.0
2/20 02:30	70.8	↑4.1
2/20 02:40	75.1	↑4.3
2/20 02:50	79.4	↑4.3
2/20 03:00	83.8	↑4.4
2/20 03:10	88.2	↑4.4
2/20 03:20	92.7	↑4.5	最大潮位差
2/20 03:30	97.0	↑4.3
2/20 03:40	101.2	↑4.2
2/20 03:50	105.3	↑4.1
2/20 04:00	109.2	↑3.9
2/20 04:10	112.8	↑3.6
2/20 04:20	116.1	↑3.3
2/20 04:30	119.1	↑3.0
2/20 04:40	121.8	↑2.7
2/20 04:50	124.0	↑2.2
2/20 05:00	125.9	↑1.9
2/20 05:10	127.4	↑1.5
2/20 05:20	128.5	↑1.1
2/20 05:30	129.2	↑0.7
2/20 05:40	129.5	↑0.3	満潮
2/20 05:50	129.5	0
2/20 06:00	129.2	↓-0.3
2/20 06:10	128.5	↓-0.7
2/20 06:20	127.6	↓-0.9
2/20 06:30	126.4	↓-1.2
2/20 06:40	125.0	↓-1.4
2/20 06:50	123.3	↓-1.7
2/20 07:00	121.5	↓-1.8
2/20 07:10	119.5	↓-2.0
2/20 07:20	117.4	↓-2.1
2/20 07:30	115.0	↓-2.4
2/20 07:40	112.6	↓-2.4
2/20 07:50	110.0	↓-2.6
2/20 08:00	107.3	↓-2.7
2/20 08:10	104.4	↓-2.9
2/20 08:20	101.4	↓-3.0
2/20 08:30	98.3	↓-3.1
2/20 08:40	95.0	↓-3.3
2/20 08:50	91.7	↓-3.3
2/20 09:00	88.3	↓-3.4
2/20 09:10	84.9	↓-3.4
2/20 09:20	81.5	↓-3.4
2/20 09:30	78.1	↓-3.4
2/20 09:40	74.7	↓-3.4
2/20 09:50	71.5	↓-3.2
2/20 10:00	68.4	↓-3.1
2/20 10:10	65.4	↓-3.0
2/20 10:20	62.7	↓-2.7
2/20 10:30	60.2	↓-2.5
2/20 10:40	58.0	↓-2.2
2/20 10:50	56.2	↓-1.8
2/20 11:00	54.6	↓-1.6
2/20 11:10	53.4	↓-1.2
2/20 11:20	52.5	↓-0.9
2/20 11:30	51.9	↓-0.6
2/20 11:40	51.7	↓-0.2	干潮
2/20 11:50	51.8	↑0.1
2/20 12:00	52.2	↑0.4
2/20 12:10	52.8	↑0.6
2/20 12:20	53.8	↑1.0
2/20 12:30	54.9	↑1.1
2/20 12:40	56.3	↑1.4
2/20 12:50	57.9	↑1.6
2/20 13:00	59.6	↑1.7
2/20 13:10	61.6	↑2.0
2/20 13:20	63.6	↑2.0
2/20 13:30	65.9	↑2.3
2/20 13:40	68.2	↑2.3
2/20 13:50	70.7	↑2.5
2/20 14:00	73.3	↑2.6
2/20 14:10	76.1	↑2.8
2/20 14:20	78.9	↑2.8
2/20 14:30	81.9	↑3.0
2/20 14:40	85.0	↑3.1
2/20 14:50	88.2	↑3.2
2/20 15:00	91.5	↑3.3
2/20 15:10	94.8	↑3.3
2/20 15:20	98.1	↑3.3
2/20 15:30	101.4	↑3.3
2/20 15:40	104.7	↑3.3
2/20 15:50	107.9	↑3.2
2/20 16:00	111.0	↑3.1
2/20 16:10	113.9	↑2.9
2/20 16:20	116.6	↑2.7
2/20 16:30	119.0	↑2.4
2/20 16:40	121.2	↑2.2
2/20 16:50	123.0	↑1.8
2/20 17:00	124.5	↑1.5
2/20 17:10	125.6	↑1.1
2/20 17:20	126.4	↑0.8
2/20 17:30	126.8	↑0.4	満潮
2/20 17:40	126.9	↑0.1
2/20 17:50	126.6	↓-0.3
2/20 18:00	125.9	↓-0.7
2/20 18:10	125.0	↓-0.9
2/20 18:20	123.7	↓-1.3
2/20 18:30	122.2	↓-1.5
2/20 18:40	120.4	↓-1.8
2/20 18:50	118.5	↓-1.9
2/20 19:00	116.3	↓-2.2
2/20 19:10	114.0	↓-2.3
2/20 19:20	111.5	↓-2.5
2/20 19:30	108.9	↓-2.6
2/20 19:40	106.2	↓-2.7
2/20 19:50	103.3	↓-2.9
2/20 20:00	100.4	↓-2.9
2/20 20:10	97.3	↓-3.1
2/20 20:20	94.2	↓-3.1
2/20 20:30	91.0	↓-3.2
2/20 20:40	87.7	↓-3.3
2/20 20:50	84.3	↓-3.4
2/20 21:00	80.8	↓-3.5
2/20 21:10	77.3	↓-3.5
2/20 21:20	73.8	↓-3.5
2/20 21:30	70.2	↓-3.6
2/20 21:40	66.7	↓-3.5
2/20 21:50	63.2	↓-3.5
2/20 22:00	59.9	↓-3.3
2/20 22:10	56.6	↓-3.3
2/20 22:20	53.5	↓-3.1
2/20 22:30	50.6	↓-2.9
2/20 22:40	48.0	↓-2.6
2/20 22:50	45.6	↓-2.4
2/20 23:00	43.5	↓-2.1
2/20 23:10	41.8	↓-1.7
2/20 23:20	40.4	↓-1.4
2/20 23:30	39.3	↓-1.1
2/20 23:40	38.6	↓-0.7
2/20 23:50	38.3	↓-0.3	干潮