21 (金)	10:29	02:15	19:04	12:50
	101cm	47cm	127cm	98cm
小潮 出 05:20 入 17:34 出 22:26 入 13:15

苫小牧（北海道）2057年09月21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
9/21 00:00	62.8	↓-2.5	最大潮位差
9/21 00:10	60.5	↓-2.3
9/21 00:20	58.2	↓-2.3
9/21 00:30	56.2	↓-2.0
9/21 00:40	54.3	↓-1.9
9/21 00:50	52.7	↓-1.6
9/21 01:00	51.2	↓-1.5
9/21 01:10	49.9	↓-1.3
9/21 01:20	48.8	↓-1.1
9/21 01:30	47.9	↓-0.9
9/21 01:40	47.3	↓-0.6
9/21 01:50	46.8	↓-0.5
9/21 02:00	46.5	↓-0.3
9/21 02:10	46.3	↓-0.2	干潮
9/21 02:20	46.3	0
9/21 02:30	46.5	↑0.2
9/21 02:40	46.8	↑0.3
9/21 02:50	47.2	↑0.4
9/21 03:00	47.7	↑0.5
9/21 03:10	48.4	↑0.7
9/21 03:20	49.2	↑0.8
9/21 03:30	50.1	↑0.9
9/21 03:40	51.1	↑1.0
9/21 03:50	52.2	↑1.1
9/21 04:00	53.5	↑1.3
9/21 04:10	54.9	↑1.4
9/21 04:20	56.4	↑1.5
9/21 04:30	58.0	↑1.6
9/21 04:40	59.8	↑1.8
9/21 04:50	61.6	↑1.8
9/21 05:00	63.6	↑2.0
9/21 05:10	65.7	↑2.1
9/21 05:20	67.8	↑2.1
9/21 05:30	70.0	↑2.2
9/21 05:40	72.2	↑2.2
9/21 05:50	74.5	↑2.3
9/21 06:00	76.7	↑2.2
9/21 06:10	78.9	↑2.2
9/21 06:20	81.0	↑2.1
9/21 06:30	83.1	↑2.1
9/21 06:40	85.0	↑1.9
9/21 06:50	86.9	↑1.9
9/21 07:00	88.6	↑1.7
9/21 07:10	90.1	↑1.5
9/21 07:20	91.5	↑1.4
9/21 07:30	92.8	↑1.3
9/21 07:40	93.9	↑1.1
9/21 07:50	94.9	↑1.0
9/21 08:00	95.8	↑0.9
9/21 08:10	96.5	↑0.7
9/21 08:20	97.1	↑0.6
9/21 08:30	97.7	↑0.6
9/21 08:40	98.2	↑0.5
9/21 08:50	98.6	↑0.4
9/21 09:00	98.9	↑0.3
9/21 09:10	99.2	↑0.3
9/21 09:20	99.5	↑0.3
9/21 09:30	99.7	↑0.2
9/21 09:40	100.0	↑0.3
9/21 09:50	100.1	↑0.1
9/21 10:00	100.3	↑0.2
9/21 10:10	100.4	↑0.1
9/21 10:20	100.4	0	満潮
9/21 10:30	100.4	0
9/21 10:40	100.4	0
9/21 10:50	100.3	↓-0.1
9/21 11:00	100.2	↓-0.1
9/21 11:10	100.0	↓-0.2
9/21 11:20	99.8	↓-0.2
9/21 11:30	99.5	↓-0.3
9/21 11:40	99.2	↓-0.3
9/21 11:50	99.0	↓-0.2
9/21 12:00	98.7	↓-0.3
9/21 12:10	98.4	↓-0.3
9/21 12:20	98.2	↓-0.2
9/21 12:30	98.0	↓-0.2
9/21 12:40	97.9	↓-0.1	干潮
9/21 12:50	97.9	0	干潮
9/21 13:00	97.9	0
9/21 13:10	98.1	↑0.2
9/21 13:20	98.3	↑0.2
9/21 13:30	98.7	↑0.4
9/21 13:40	99.1	↑0.4
9/21 13:50	99.6	↑0.5
9/21 14:00	100.3	↑0.7
9/21 14:10	101.0	↑0.7
9/21 14:20	101.8	↑0.8
9/21 14:30	102.6	↑0.8
9/21 14:40	103.5	↑0.9
9/21 14:50	104.5	↑1.0
9/21 15:00	105.4	↑0.9
9/21 15:10	106.4	↑1.0
9/21 15:20	107.4	↑1.0
9/21 15:30	108.4	↑1.0
9/21 15:40	109.4	↑1.0
9/21 15:50	110.5	↑1.1
9/21 16:00	111.5	↑1.0
9/21 16:10	112.5	↑1.0
9/21 16:20	113.5	↑1.0
9/21 16:30	114.6	↑1.1
9/21 16:40	115.6	↑1.0
9/21 16:50	116.6	↑1.0
9/21 17:00	117.7	↑1.1
9/21 17:10	118.7	↑1.0
9/21 17:20	119.7	↑1.0
9/21 17:30	120.7	↑1.0
9/21 17:40	121.7	↑1.0
9/21 17:50	122.6	↑0.9
9/21 18:00	123.5	↑0.9
9/21 18:10	124.3	↑0.8
9/21 18:20	125.0	↑0.7
9/21 18:30	125.5	↑0.5
9/21 18:40	126.0	↑0.5
9/21 18:50	126.3	↑0.3
9/21 19:00	126.4	↑0.1	満潮
9/21 19:10	126.4	0
9/21 19:20	126.2	↓-0.2
9/21 19:30	125.8	↓-0.4
9/21 19:40	125.2	↓-0.6
9/21 19:50	124.5	↓-0.7
9/21 20:00	123.6	↓-0.9
9/21 20:10	122.5	↓-1.1
9/21 20:20	121.3	↓-1.2
9/21 20:30	119.9	↓-1.4
9/21 20:40	118.5	↓-1.4
9/21 20:50	116.9	↓-1.6
9/21 21:00	115.2	↓-1.7
9/21 21:10	113.5	↓-1.7
9/21 21:20	111.7	↓-1.8
9/21 21:30	109.8	↓-1.9
9/21 21:40	107.9	↓-1.9
9/21 21:50	106.0	↓-1.9
9/21 22:00	104.1	↓-1.9
9/21 22:10	102.1	↓-2.0
9/21 22:20	100.1	↓-2.0
9/21 22:30	98.0	↓-2.1
9/21 22:40	96.0	↓-2.0
9/21 22:50	93.9	↓-2.1
9/21 23:00	91.7	↓-2.2
9/21 23:10	89.6	↓-2.1
9/21 23:20	87.4	↓-2.2
9/21 23:30	85.2	↓-2.2
9/21 23:40	83.0	↓-2.2
9/21 23:50	80.8	↓-2.2