20 (月)	05:16	11:17	17:09	23:20
	131cm	47cm	133cm	37cm
中潮 出 06:24 入 17:13 出 07:31 入 20:34

苫小牧（北海道）2045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	33.3	↑1.8
2/20 00:10	35.4	↑2.1
2/20 00:20	37.7	↑2.3
2/20 00:30	40.2	↑2.5
2/20 00:40	43.0	↑2.8
2/20 00:50	45.9	↑2.9
2/20 01:00	49.1	↑3.2
2/20 01:10	52.4	↑3.3
2/20 01:20	56.0	↑3.6
2/20 01:30	59.7	↑3.7
2/20 01:40	63.6	↑3.9
2/20 01:50	67.7	↑4.1
2/20 02:00	71.9	↑4.2
2/20 02:10	76.3	↑4.4
2/20 02:20	80.7	↑4.4
2/20 02:30	85.2	↑4.5	最大潮位差
2/20 02:40	89.7	↑4.5	最大潮位差
2/20 02:50	94.1	↑4.4
2/20 03:00	98.5	↑4.4
2/20 03:10	102.7	↑4.2
2/20 03:20	106.8	↑4.1
2/20 03:30	110.7	↑3.9
2/20 03:40	114.3	↑3.6
2/20 03:50	117.6	↑3.3
2/20 04:00	120.5	↑2.9
2/20 04:10	123.1	↑2.6
2/20 04:20	125.4	↑2.3
2/20 04:30	127.2	↑1.8
2/20 04:40	128.7	↑1.5
2/20 04:50	129.7	↑1.0
2/20 05:00	130.4	↑0.7
2/20 05:10	130.7	↑0.3	満潮
2/20 05:20	130.7	0
2/20 05:30	130.4	↓-0.3
2/20 05:40	129.8	↓-0.6
2/20 05:50	128.9	↓-0.9
2/20 06:00	127.7	↓-1.2
2/20 06:10	126.3	↓-1.4
2/20 06:20	124.7	↓-1.6
2/20 06:30	122.9	↓-1.8
2/20 06:40	121.0	↓-1.9
2/20 06:50	118.8	↓-2.2
2/20 07:00	116.4	↓-2.4
2/20 07:10	113.9	↓-2.5
2/20 07:20	111.2	↓-2.7
2/20 07:30	108.3	↓-2.9
2/20 07:40	105.2	↓-3.1
2/20 07:50	102.0	↓-3.2
2/20 08:00	98.6	↓-3.4
2/20 08:10	95.1	↓-3.5
2/20 08:20	91.5	↓-3.6
2/20 08:30	87.8	↓-3.7
2/20 08:40	84.0	↓-3.8
2/20 08:50	80.2	↓-3.8
2/20 09:00	76.5	↓-3.7
2/20 09:10	72.8	↓-3.7
2/20 09:20	69.1	↓-3.7
2/20 09:30	65.7	↓-3.4
2/20 09:40	62.4	↓-3.3
2/20 09:50	59.4	↓-3.0
2/20 10:00	56.6	↓-2.8
2/20 10:10	54.1	↓-2.5
2/20 10:20	52.0	↓-2.1
2/20 10:30	50.2	↓-1.8
2/20 10:40	48.7	↓-1.5
2/20 10:50	47.6	↓-1.1
2/20 11:00	46.9	↓-0.7
2/20 11:10	46.5	↓-0.4	干潮
2/20 11:20	46.5	0
2/20 11:30	46.8	↑0.3
2/20 11:40	47.4	↑0.6
2/20 11:50	48.3	↑0.9
2/20 12:00	49.4	↑1.1
2/20 12:10	50.8	↑1.4
2/20 12:20	52.5	↑1.7
2/20 12:30	54.3	↑1.8
2/20 12:40	56.4	↑2.1
2/20 12:50	58.7	↑2.3
2/20 13:00	61.1	↑2.4
2/20 13:10	63.8	↑2.7
2/20 13:20	66.6	↑2.8
2/20 13:30	69.6	↑3.0
2/20 13:40	72.8	↑3.2
2/20 13:50	76.1	↑3.3
2/20 14:00	79.6	↑3.5
2/20 14:10	83.3	↑3.7
2/20 14:20	87.0	↑3.7
2/20 14:30	90.8	↑3.8
2/20 14:40	94.7	↑3.9
2/20 14:50	98.7	↑4.0
2/20 15:00	102.6	↑3.9
2/20 15:10	106.4	↑3.8
2/20 15:20	110.1	↑3.7
2/20 15:30	113.7	↑3.6
2/20 15:40	117.1	↑3.4
2/20 15:50	120.2	↑3.1
2/20 16:00	123.0	↑2.8
2/20 16:10	125.5	↑2.5
2/20 16:20	127.6	↑2.1
2/20 16:30	129.3	↑1.7
2/20 16:40	130.7	↑1.4
2/20 16:50	131.6	↑0.9
2/20 17:00	132.1	↑0.5	満潮
2/20 17:10	132.2	↑0.1
2/20 17:20	131.9	↓-0.3
2/20 17:30	131.3	↓-0.6
2/20 17:40	130.2	↓-1.1
2/20 17:50	128.9	↓-1.3
2/20 18:00	127.3	↓-1.6
2/20 18:10	125.4	↓-1.9
2/20 18:20	123.2	↓-2.2
2/20 18:30	120.9	↓-2.3
2/20 18:40	118.3	↓-2.6
2/20 18:50	115.6	↓-2.7
2/20 19:00	112.7	↓-2.9
2/20 19:10	109.6	↓-3.1
2/20 19:20	106.5	↓-3.1
2/20 19:30	103.2	↓-3.3
2/20 19:40	99.7	↓-3.5
2/20 19:50	96.2	↓-3.5
2/20 20:00	92.6	↓-3.6
2/20 20:10	88.8	↓-3.8
2/20 20:20	85.0	↓-3.8
2/20 20:30	81.2	↓-3.8
2/20 20:40	77.2	↓-4.0
2/20 20:50	73.3	↓-3.9
2/20 21:00	69.4	↓-3.9
2/20 21:10	65.5	↓-3.9
2/20 21:20	61.7	↓-3.8
2/20 21:30	58.1	↓-3.6
2/20 21:40	54.6	↓-3.5
2/20 21:50	51.3	↓-3.3
2/20 22:00	48.3	↓-3.0
2/20 22:10	45.6	↓-2.7
2/20 22:20	43.2	↓-2.4
2/20 22:30	41.1	↓-2.1
2/20 22:40	39.4	↓-1.7
2/20 22:50	38.1	↓-1.3
2/20 23:00	37.1	↓-1.0
2/20 23:10	36.6	↓-0.5	干潮
2/20 23:20	36.4	↓-0.2	干潮
2/20 23:30	36.6	↑0.2
2/20 23:40	37.2	↑0.6
2/20 23:50	38.1	↑0.9