20 (金)	05:04	12:06	18:53	23:52
	137cm	7cm	114cm	79cm
中潮 出 04:46 入 18:22 出 07:51 入 22:54 潮干狩り ◎ 10:04～14:28

苫小牧（北海道）2018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	72.9	↑1.1
4/20 00:10	74.2	↑1.3
4/20 00:20	75.6	↑1.4
4/20 00:30	77.3	↑1.7
4/20 00:40	79.1	↑1.8
4/20 00:50	81.0	↑1.9
4/20 01:00	83.1	↑2.1
4/20 01:10	85.2	↑2.1
4/20 01:20	87.4	↑2.2
4/20 01:30	89.7	↑2.3
4/20 01:40	92.1	↑2.4
4/20 01:50	94.5	↑2.4
4/20 02:00	97.0	↑2.5
4/20 02:10	99.6	↑2.6
4/20 02:20	102.2	↑2.6
4/20 02:30	104.9	↑2.7
4/20 02:40	107.7	↑2.8
4/20 02:50	110.5	↑2.8
4/20 03:00	113.3	↑2.8
4/20 03:10	116.1	↑2.8
4/20 03:20	118.9	↑2.8
4/20 03:30	121.6	↑2.7
4/20 03:40	124.2	↑2.6
4/20 03:50	126.6	↑2.4
4/20 04:00	128.9	↑2.3
4/20 04:10	130.9	↑2.0
4/20 04:20	132.6	↑1.7
4/20 04:30	134.1	↑1.5
4/20 04:40	135.2	↑1.1
4/20 04:50	135.9	↑0.7
4/20 05:00	136.2	↑0.3	満潮
4/20 05:10	136.1	↓-0.1
4/20 05:20	135.7	↓-0.4
4/20 05:30	134.8	↓-0.9
4/20 05:40	133.5	↓-1.3
4/20 05:50	131.8	↓-1.7
4/20 06:00	129.8	↓-2.0
4/20 06:10	127.5	↓-2.3
4/20 06:20	124.8	↓-2.7
4/20 06:30	121.9	↓-2.9
4/20 06:40	118.8	↓-3.1
4/20 06:50	115.5	↓-3.3
4/20 07:00	112.0	↓-3.5
4/20 07:10	108.4	↓-3.6
4/20 07:20	104.6	↓-3.8
4/20 07:30	100.8	↓-3.8
4/20 07:40	96.8	↓-4.0
4/20 07:50	92.7	↓-4.1
4/20 08:00	88.6	↓-4.1
4/20 08:10	84.4	↓-4.2
4/20 08:20	80.1	↓-4.3
4/20 08:30	75.7	↓-4.4
4/20 08:40	71.3	↓-4.4
4/20 08:50	66.8	↓-4.5
4/20 09:00	62.2	↓-4.6	最大潮位差
4/20 09:10	57.7	↓-4.5
4/20 09:20	53.1	↓-4.6	最大潮位差
4/20 09:30	48.5	↓-4.6	最大潮位差
4/20 09:40	44.0	↓-4.5
4/20 09:50	39.6	↓-4.4
4/20 10:00	35.3	↓-4.3
4/20 10:10	31.2	↓-4.1
4/20 10:20	27.3	↓-3.9
4/20 10:30	23.6	↓-3.7
4/20 10:40	20.2	↓-3.4
4/20 10:50	17.2	↓-3.0
4/20 11:00	14.5	↓-2.7
4/20 11:10	12.1	↓-2.4
4/20 11:20	10.2	↓-1.9
4/20 11:30	8.6	↓-1.6
4/20 11:40	7.4	↓-1.2
4/20 11:50	6.7	↓-0.7
4/20 12:00	6.3	↓-0.4	干潮
4/20 12:10	6.3	0
4/20 12:20	6.6	↑0.3
4/20 12:30	7.3	↑0.7
4/20 12:40	8.3	↑1.0
4/20 12:50	9.6	↑1.3
4/20 13:00	11.1	↑1.5
4/20 13:10	12.9	↑1.8
4/20 13:20	14.9	↑2.0
4/20 13:30	17.1	↑2.2
4/20 13:40	19.5	↑2.4
4/20 13:50	22.1	↑2.6
4/20 14:00	25.0	↑2.9
4/20 14:10	28.0	↑3.0
4/20 14:20	31.2	↑3.2
4/20 14:30	34.6	↑3.4
4/20 14:40	38.1	↑3.5
4/20 14:50	41.9	↑3.8
4/20 15:00	45.8	↑3.9
4/20 15:10	49.9	↑4.1
4/20 15:20	54.1	↑4.2
4/20 15:30	58.4	↑4.3
4/20 15:40	62.8	↑4.4
4/20 15:50	67.2	↑4.4
4/20 16:00	71.6	↑4.4
4/20 16:10	76.0	↑4.4
4/20 16:20	80.3	↑4.3
4/20 16:30	84.4	↑4.1
4/20 16:40	88.4	↑4.0
4/20 16:50	92.2	↑3.8
4/20 17:00	95.7	↑3.5
4/20 17:10	98.9	↑3.2
4/20 17:20	101.8	↑2.9
4/20 17:30	104.3	↑2.5
4/20 17:40	106.6	↑2.3
4/20 17:50	108.4	↑1.8
4/20 18:00	110.0	↑1.6
4/20 18:10	111.2	↑1.2
4/20 18:20	112.2	↑1.0
4/20 18:30	112.8	↑0.6
4/20 18:40	113.2	↑0.4
4/20 18:50	113.3	↑0.1	満潮
4/20 19:00	113.3	0
4/20 19:10	113.0	↓-0.3
4/20 19:20	112.6	↓-0.4
4/20 19:30	112.1	↓-0.5
4/20 19:40	111.4	↓-0.7
4/20 19:50	110.6	↓-0.8
4/20 20:00	109.7	↓-0.9
4/20 20:10	108.8	↓-0.9
4/20 20:20	107.7	↓-1.1
4/20 20:30	106.5	↓-1.2
4/20 20:40	105.2	↓-1.3
4/20 20:50	103.8	↓-1.4
4/20 21:00	102.3	↓-1.5
4/20 21:10	100.7	↓-1.6
4/20 21:20	99.0	↓-1.7
4/20 21:30	97.2	↓-1.8
4/20 21:40	95.4	↓-1.8
4/20 21:50	93.5	↓-1.9
4/20 22:00	91.6	↓-1.9
4/20 22:10	89.8	↓-1.8
4/20 22:20	87.9	↓-1.9
4/20 22:30	86.2	↓-1.7
4/20 22:40	84.5	↓-1.7
4/20 22:50	83.0	↓-1.5
4/20 23:00	81.6	↓-1.4
4/20 23:10	80.5	↓-1.1
4/20 23:20	79.6	↓-0.9
4/20 23:30	78.9	↓-0.7
4/20 23:40	78.5	↓-0.4
4/20 23:50	78.4	↓-0.1	干潮