31 (火)	07:39	00:56	19:32	14:20
	128cm	45cm	104cm	62cm
小潮 出 07:03 入 16:11 出 10:43 入 23:55

苫小牧（北海道）2030年12月31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
12/31 00:00	48.5	↓-1.6
12/31 00:10	47.1	↓-1.4
12/31 00:20	46.0	↓-1.1
12/31 00:30	45.2	↓-0.8
12/31 00:40	44.7	↓-0.5
12/31 00:50	44.4	↓-0.3	干潮
12/31 01:00	44.4	0
12/31 01:10	44.7	↑0.3
12/31 01:20	45.1	↑0.4
12/31 01:30	45.8	↑0.7
12/31 01:40	46.7	↑0.9
12/31 01:50	47.8	↑1.1
12/31 02:00	49.0	↑1.2
12/31 02:10	50.5	↑1.5
12/31 02:20	52.0	↑1.5
12/31 02:30	53.8	↑1.8
12/31 02:40	55.7	↑1.9
12/31 02:50	57.8	↑2.1
12/31 03:00	60.0	↑2.2
12/31 03:10	62.4	↑2.4
12/31 03:20	65.0	↑2.6
12/31 03:30	67.7	↑2.7
12/31 03:40	70.6	↑2.9
12/31 03:50	73.6	↑3.0
12/31 04:00	76.8	↑3.2
12/31 04:10	80.1	↑3.3
12/31 04:20	83.6	↑3.5
12/31 04:30	87.0	↑3.4
12/31 04:40	90.6	↑3.6	最大潮位差
12/31 04:50	94.1	↑3.5
12/31 05:00	97.6	↑3.5
12/31 05:10	101.0	↑3.4
12/31 05:20	104.3	↑3.3
12/31 05:30	107.5	↑3.2
12/31 05:40	110.5	↑3.0
12/31 05:50	113.3	↑2.8
12/31 06:00	115.9	↑2.6
12/31 06:10	118.2	↑2.3
12/31 06:20	120.3	↑2.1
12/31 06:30	122.1	↑1.8
12/31 06:40	123.6	↑1.5
12/31 06:50	124.8	↑1.2
12/31 07:00	125.8	↑1.0
12/31 07:10	126.5	↑0.7
12/31 07:20	127.0	↑0.5
12/31 07:30	127.3	↑0.3	満潮
12/31 07:40	127.4	↑0.1
12/31 07:50	127.2	↓-0.2
12/31 08:00	126.9	↓-0.3
12/31 08:10	126.5	↓-0.4
12/31 08:20	125.9	↓-0.6
12/31 08:30	125.1	↓-0.8
12/31 08:40	124.2	↓-0.9
12/31 08:50	123.1	↓-1.1
12/31 09:00	121.9	↓-1.2
12/31 09:10	120.5	↓-1.4
12/31 09:20	119.0	↓-1.5
12/31 09:30	117.3	↓-1.7
12/31 09:40	115.5	↓-1.8
12/31 09:50	113.5	↓-2.0
12/31 10:00	111.3	↓-2.2
12/31 10:10	109.0	↓-2.3
12/31 10:20	106.5	↓-2.5
12/31 10:30	103.9	↓-2.6
12/31 10:40	101.1	↓-2.8
12/31 10:50	98.3	↓-2.8
12/31 11:00	95.5	↓-2.8
12/31 11:10	92.6	↓-2.9
12/31 11:20	89.7	↓-2.9
12/31 11:30	86.8	↓-2.9
12/31 11:40	84.0	↓-2.8
12/31 11:50	81.3	↓-2.7
12/31 12:00	78.7	↓-2.6
12/31 12:10	76.3	↓-2.4
12/31 12:20	74.0	↓-2.3
12/31 12:30	72.0	↓-2.0
12/31 12:40	70.1	↓-1.9
12/31 12:50	68.4	↓-1.7
12/31 13:00	66.9	↓-1.5
12/31 13:10	65.6	↓-1.3
12/31 13:20	64.6	↓-1.0
12/31 13:30	63.7	↓-0.9
12/31 13:40	63.0	↓-0.7
12/31 13:50	62.4	↓-0.6
12/31 14:00	62.1	↓-0.3
12/31 14:10	61.8	↓-0.3	干潮
12/31 14:20	61.8	0	干潮
12/31 14:30	61.9	↑0.1
12/31 14:40	62.1	↑0.2
12/31 14:50	62.5	↑0.4
12/31 15:00	63.0	↑0.5
12/31 15:10	63.7	↑0.7
12/31 15:20	64.5	↑0.8
12/31 15:30	65.6	↑1.1
12/31 15:40	66.7	↑1.1
12/31 15:50	68.1	↑1.4
12/31 16:00	69.6	↑1.5
12/31 16:10	71.3	↑1.7
12/31 16:20	73.1	↑1.8
12/31 16:30	75.1	↑2.0
12/31 16:40	77.2	↑2.1
12/31 16:50	79.3	↑2.1
12/31 17:00	81.6	↑2.3
12/31 17:10	83.9	↑2.3
12/31 17:20	86.1	↑2.2
12/31 17:30	88.4	↑2.3
12/31 17:40	90.6	↑2.2
12/31 17:50	92.6	↑2.0
12/31 18:00	94.6	↑2.0
12/31 18:10	96.3	↑1.7
12/31 18:20	97.9	↑1.6
12/31 18:30	99.3	↑1.4
12/31 18:40	100.5	↑1.2
12/31 18:50	101.5	↑1.0
12/31 19:00	102.2	↑0.7
12/31 19:10	102.7	↑0.5
12/31 19:20	103.0	↑0.3
12/31 19:30	103.2	↑0.2	満潮
12/31 19:40	103.1	↓-0.1
12/31 19:50	102.8	↓-0.3
12/31 20:00	102.4	↓-0.4
12/31 20:10	101.9	↓-0.5
12/31 20:20	101.2	↓-0.7
12/31 20:30	100.5	↓-0.7
12/31 20:40	99.6	↓-0.9
12/31 20:50	98.7	↓-0.9
12/31 21:00	97.6	↓-1.1
12/31 21:10	96.5	↓-1.1
12/31 21:20	95.3	↓-1.2
12/31 21:30	94.0	↓-1.3
12/31 21:40	92.6	↓-1.4
12/31 21:50	91.1	↓-1.5
12/31 22:00	89.5	↓-1.6
12/31 22:10	87.9	↓-1.6
12/31 22:20	86.2	↓-1.7
12/31 22:30	84.3	↓-1.9
12/31 22:40	82.4	↓-1.9
12/31 22:50	80.5	↓-1.9
12/31 23:00	78.5	↓-2.0
12/31 23:10	76.5	↓-2.0
12/31 23:20	74.5	↓-2.0
12/31 23:30	72.5	↓-2.0
12/31 23:40	70.6	↓-1.9
12/31 23:50	68.8	↓-1.8