20 (火)	06:28	00:41	-	14:56
	118cm	97cm	-	33cm
小潮 出 04:46 入 18:22 出 10:06 入 01:01 潮干狩り ○ 14:06～15:47

苫小牧（北海道）2021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	96.6	↓-0.2
4/20 00:10	96.4	↓-0.2
4/20 00:20	96.2	↓-0.2
4/20 00:30	96.1	↓-0.1
4/20 00:40	96.1	0	干潮
4/20 00:50	96.1	0
4/20 01:00	96.3	↑0.2
4/20 01:10	96.5	↑0.2
4/20 01:20	96.8	↑0.3
4/20 01:30	97.2	↑0.4
4/20 01:40	97.7	↑0.5
4/20 01:50	98.3	↑0.6
4/20 02:00	98.9	↑0.6
4/20 02:10	99.7	↑0.8
4/20 02:20	100.5	↑0.8
4/20 02:30	101.3	↑0.8
4/20 02:40	102.2	↑0.9
4/20 02:50	103.1	↑0.9
4/20 03:00	104.1	↑1.0
4/20 03:10	105.0	↑0.9
4/20 03:20	105.9	↑0.9
4/20 03:30	106.8	↑0.9
4/20 03:40	107.7	↑0.9
4/20 03:50	108.6	↑0.9
4/20 04:00	109.5	↑0.9
4/20 04:10	110.3	↑0.8
4/20 04:20	111.1	↑0.8
4/20 04:30	111.9	↑0.8
4/20 04:40	112.7	↑0.8
4/20 04:50	113.4	↑0.7
4/20 05:00	114.1	↑0.7
4/20 05:10	114.8	↑0.7
4/20 05:20	115.5	↑0.7
4/20 05:30	116.1	↑0.6
4/20 05:40	116.6	↑0.5
4/20 05:50	117.1	↑0.5
4/20 06:00	117.4	↑0.3
4/20 06:10	117.7	↑0.3
4/20 06:20	117.9	↑0.2	満潮
4/20 06:30	117.9	0
4/20 06:40	117.8	↓-0.1
4/20 06:50	117.5	↓-0.3
4/20 07:00	117.1	↓-0.4
4/20 07:10	116.4	↓-0.7
4/20 07:20	115.6	↓-0.8
4/20 07:30	114.6	↓-1.0
4/20 07:40	113.4	↓-1.2
4/20 07:50	112.1	↓-1.3
4/20 08:00	110.5	↓-1.6
4/20 08:10	108.8	↓-1.7
4/20 08:20	107.0	↓-1.8
4/20 08:30	105.0	↓-2.0
4/20 08:40	102.9	↓-2.1
4/20 08:50	100.7	↓-2.2
4/20 09:00	98.4	↓-2.3
4/20 09:10	96.1	↓-2.3
4/20 09:20	93.7	↓-2.4
4/20 09:30	91.3	↓-2.4
4/20 09:40	88.9	↓-2.4
4/20 09:50	86.4	↓-2.5	最大潮位差
4/20 10:00	83.9	↓-2.5	最大潮位差
4/20 10:10	81.4	↓-2.5	最大潮位差
4/20 10:20	79.0	↓-2.4
4/20 10:30	76.5	↓-2.5	最大潮位差
4/20 10:40	74.0	↓-2.5	最大潮位差
4/20 10:50	71.6	↓-2.4
4/20 11:00	69.1	↓-2.5	最大潮位差
4/20 11:10	66.6	↓-2.5	最大潮位差
4/20 11:20	64.2	↓-2.4
4/20 11:30	61.8	↓-2.4
4/20 11:40	59.4	↓-2.4
4/20 11:50	57.0	↓-2.4
4/20 12:00	54.7	↓-2.3
4/20 12:10	52.4	↓-2.3
4/20 12:20	50.2	↓-2.2
4/20 12:30	48.0	↓-2.2
4/20 12:40	46.0	↓-2.0
4/20 12:50	44.0	↓-2.0
4/20 13:00	42.2	↓-1.8
4/20 13:10	40.5	↓-1.7
4/20 13:20	38.9	↓-1.6
4/20 13:30	37.5	↓-1.4
4/20 13:40	36.3	↓-1.2
4/20 13:50	35.2	↓-1.1
4/20 14:00	34.3	↓-0.9
4/20 14:10	33.5	↓-0.8
4/20 14:20	32.9	↓-0.6
4/20 14:30	32.5	↓-0.4
4/20 14:40	32.2	↓-0.3
4/20 14:50	32.0	↓-0.2	干潮
4/20 15:00	32.0	0
4/20 15:10	32.2	↑0.2
4/20 15:20	32.5	↑0.3
4/20 15:30	32.9	↑0.4
4/20 15:40	33.4	↑0.5
4/20 15:50	34.0	↑0.6
4/20 16:00	34.8	↑0.8
4/20 16:10	35.7	↑0.9
4/20 16:20	36.7	↑1.0
4/20 16:30	37.9	↑1.2
4/20 16:40	39.1	↑1.2
4/20 16:50	40.5	↑1.4
4/20 17:00	42.0	↑1.5
4/20 17:10	43.7	↑1.7
4/20 17:20	45.4	↑1.7
4/20 17:30	47.3	↑1.9
4/20 17:40	49.2	↑1.9
4/20 17:50	51.3	↑2.1
4/20 18:00	53.4	↑2.1
4/20 18:10	55.6	↑2.2
4/20 18:20	57.9	↑2.3
4/20 18:30	60.2	↑2.3
4/20 18:40	62.5	↑2.3
4/20 18:50	64.7	↑2.2
4/20 19:00	67.0	↑2.3
4/20 19:10	69.3	↑2.3
4/20 19:20	71.4	↑2.1
4/20 19:30	73.6	↑2.2
4/20 19:40	75.6	↑2.0
4/20 19:50	77.5	↑1.9
4/20 20:00	79.4	↑1.9
4/20 20:10	81.1	↑1.7
4/20 20:20	82.8	↑1.7
4/20 20:30	84.3	↑1.5
4/20 20:40	85.8	↑1.5
4/20 20:50	87.2	↑1.4
4/20 21:00	88.4	↑1.2
4/20 21:10	89.6	↑1.2
4/20 21:20	90.7	↑1.1
4/20 21:30	91.8	↑1.1
4/20 21:40	92.8	↑1.0
4/20 21:50	93.7	↑0.9
4/20 22:00	94.6	↑0.9
4/20 22:10	95.4	↑0.8
4/20 22:20	96.2	↑0.8
4/20 22:30	96.9	↑0.7
4/20 22:40	97.5	↑0.6
4/20 22:50	98.2	↑0.7
4/20 23:00	98.7	↑0.5
4/20 23:10	99.2	↑0.5
4/20 23:20	99.6	↑0.4
4/20 23:30	100.0	↑0.4
4/20 23:40	100.3	↑0.3
4/20 23:50	100.6	↑0.3