20 (木)	02:51	09:25	15:49	21:23
	130cm	18cm	130cm	58cm
大潮 出 04:47 入 18:21 出 04:47 入 18:29 潮干狩り ○ 07:49～11:06

苫小牧（北海道）2023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	88.2	↑3.8
4/20 00:10	92.0	↑3.8
4/20 00:20	95.8	↑3.8
4/20 00:30	99.5	↑3.7
4/20 00:40	103.2	↑3.7
4/20 00:50	106.8	↑3.6
4/20 01:00	110.3	↑3.5
4/20 01:10	113.5	↑3.2
4/20 01:20	116.5	↑3.0
4/20 01:30	119.2	↑2.7
4/20 01:40	121.7	↑2.5
4/20 01:50	123.8	↑2.1
4/20 02:00	125.7	↑1.9
4/20 02:10	127.2	↑1.5
4/20 02:20	128.3	↑1.1
4/20 02:30	129.2	↑0.9
4/20 02:40	129.6	↑0.4
4/20 02:50	129.8	↑0.2	満潮
4/20 03:00	129.7	↓-0.1
4/20 03:10	129.2	↓-0.5
4/20 03:20	128.5	↓-0.7
4/20 03:30	127.5	↓-1.0
4/20 03:40	126.2	↓-1.3
4/20 03:50	124.7	↓-1.5
4/20 04:00	122.9	↓-1.8
4/20 04:10	120.8	↓-2.1
4/20 04:20	118.5	↓-2.3
4/20 04:30	115.9	↓-2.6
4/20 04:40	113.1	↓-2.8
4/20 04:50	110.0	↓-3.1
4/20 05:00	106.7	↓-3.3
4/20 05:10	103.1	↓-3.6
4/20 05:20	99.3	↓-3.8
4/20 05:30	95.2	↓-4.1
4/20 05:40	91.0	↓-4.2
4/20 05:50	86.6	↓-4.4
4/20 06:00	82.0	↓-4.6
4/20 06:10	77.3	↓-4.7
4/20 06:20	72.5	↓-4.8
4/20 06:30	67.7	↓-4.8
4/20 06:40	62.9	↓-4.8
4/20 06:50	58.1	↓-4.8
4/20 07:00	53.5	↓-4.6
4/20 07:10	49.0	↓-4.5
4/20 07:20	44.6	↓-4.4
4/20 07:30	40.5	↓-4.1
4/20 07:40	36.7	↓-3.8
4/20 07:50	33.2	↓-3.5
4/20 08:00	30.0	↓-3.2
4/20 08:10	27.1	↓-2.9
4/20 08:20	24.6	↓-2.5
4/20 08:30	22.5	↓-2.1
4/20 08:40	20.7	↓-1.8
4/20 08:50	19.3	↓-1.4
4/20 09:00	18.3	↓-1.0
4/20 09:10	17.6	↓-0.7
4/20 09:20	17.3	↓-0.3	干潮
4/20 09:30	17.3	0
4/20 09:40	17.7	↑0.4
4/20 09:50	18.4	↑0.7
4/20 10:00	19.4	↑1.0
4/20 10:10	20.7	↑1.3
4/20 10:20	22.4	↑1.7
4/20 10:30	24.3	↑1.9
4/20 10:40	26.6	↑2.3
4/20 10:50	29.2	↑2.6
4/20 11:00	32.0	↑2.8
4/20 11:10	35.2	↑3.2
4/20 11:20	38.7	↑3.5
4/20 11:30	42.5	↑3.8
4/20 11:40	46.5	↑4.0
4/20 11:50	50.8	↑4.3
4/20 12:00	55.2	↑4.4
4/20 12:10	59.9	↑4.7
4/20 12:20	64.7	↑4.8
4/20 12:30	69.6	↑4.9
4/20 12:40	74.6	↑5.0	最大潮位差
4/20 12:50	79.6	↑5.0	最大潮位差
4/20 13:00	84.5	↑4.9
4/20 13:10	89.3	↑4.8
4/20 13:20	94.0	↑4.7
4/20 13:30	98.5	↑4.5
4/20 13:40	102.8	↑4.3
4/20 13:50	106.9	↑4.1
4/20 14:00	110.6	↑3.7
4/20 14:10	114.0	↑3.4
4/20 14:20	117.0	↑3.0
4/20 14:30	119.8	↑2.8
4/20 14:40	122.1	↑2.3
4/20 14:50	124.1	↑2.0
4/20 15:00	125.8	↑1.7
4/20 15:10	127.1	↑1.3
4/20 15:20	128.1	↑1.0
4/20 15:30	128.8	↑0.7
4/20 15:40	129.2	↑0.4	満潮
4/20 15:50	129.2	0
4/20 16:00	129.1	↓-0.1
4/20 16:10	128.6	↓-0.5
4/20 16:20	127.9	↓-0.7
4/20 16:30	126.9	↓-1.0
4/20 16:40	125.7	↓-1.2
4/20 16:50	124.2	↓-1.5
4/20 17:00	122.5	↓-1.7
4/20 17:10	120.6	↓-1.9
4/20 17:20	118.4	↓-2.2
4/20 17:30	115.9	↓-2.5
4/20 17:40	113.3	↓-2.6
4/20 17:50	110.4	↓-2.9
4/20 18:00	107.4	↓-3.0
4/20 18:10	104.1	↓-3.3
4/20 18:20	100.8	↓-3.3
4/20 18:30	97.3	↓-3.5
4/20 18:40	93.7	↓-3.6
4/20 18:50	90.1	↓-3.6
4/20 19:00	86.5	↓-3.6
4/20 19:10	83.0	↓-3.5
4/20 19:20	79.6	↓-3.4
4/20 19:30	76.3	↓-3.3
4/20 19:40	73.2	↓-3.1
4/20 19:50	70.3	↓-2.9
4/20 20:00	67.6	↓-2.7
4/20 20:10	65.2	↓-2.4
4/20 20:20	63.2	↓-2.0
4/20 20:30	61.4	↓-1.8
4/20 20:40	59.9	↓-1.5
4/20 20:50	58.8	↓-1.1
4/20 21:00	58.0	↓-0.8
4/20 21:10	57.5	↓-0.5
4/20 21:20	57.3	↓-0.2	干潮
4/20 21:30	57.3	0
4/20 21:40	57.7	↑0.4
4/20 21:50	58.3	↑0.6
4/20 22:00	59.1	↑0.8
4/20 22:10	60.2	↑1.1
4/20 22:20	61.5	↑1.3
4/20 22:30	63.0	↑1.5
4/20 22:40	64.7	↑1.7
4/20 22:50	66.6	↑1.9
4/20 23:00	68.7	↑2.1
4/20 23:10	71.0	↑2.3
4/20 23:20	73.5	↑2.5
4/20 23:30	76.2	↑2.7
4/20 23:40	79.1	↑2.9
4/20 23:50	82.2	↑3.1