20 (土)	05:47	00:08	19:49	12:45
	126cm	79cm	104cm	25cm
中潮 出 04:45 入 18:22 出 23:38 入 08:49 潮干狩り ○ 11:24～14:17

苫小牧（北海道）2052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	78.3	↓-0.3	干潮
4/20 00:10	78.2	↓-0.1
4/20 00:20	78.4	↑0.2
4/20 00:30	78.8	↑0.4
4/20 00:40	79.4	↑0.6
4/20 00:50	80.2	↑0.8
4/20 01:00	81.1	↑0.9
4/20 01:10	82.2	↑1.1
4/20 01:20	83.5	↑1.3
4/20 01:30	84.8	↑1.3
4/20 01:40	86.2	↑1.4
4/20 01:50	87.7	↑1.5
4/20 02:00	89.3	↑1.6
4/20 02:10	90.9	↑1.6
4/20 02:20	92.6	↑1.7
4/20 02:30	94.3	↑1.7
4/20 02:40	96.0	↑1.7
4/20 02:50	97.8	↑1.8
4/20 03:00	99.7	↑1.9
4/20 03:10	101.6	↑1.9
4/20 03:20	103.5	↑1.9
4/20 03:30	105.5	↑2.0
4/20 03:40	107.5	↑2.0
4/20 03:50	109.5	↑2.0
4/20 04:00	111.6	↑2.1
4/20 04:10	113.6	↑2.0
4/20 04:20	115.5	↑1.9
4/20 04:30	117.4	↑1.9
4/20 04:40	119.2	↑1.8
4/20 04:50	120.8	↑1.6
4/20 05:00	122.2	↑1.4
4/20 05:10	123.5	↑1.3
4/20 05:20	124.4	↑0.9
4/20 05:30	125.1	↑0.7
4/20 05:40	125.5	↑0.4	満潮
4/20 05:50	125.5	0
4/20 06:00	125.2	↓-0.3
4/20 06:10	124.6	↓-0.6
4/20 06:20	123.6	↓-1.0
4/20 06:30	122.3	↓-1.3
4/20 06:40	120.7	↓-1.6
4/20 06:50	118.8	↓-1.9
4/20 07:00	116.7	↓-2.1
4/20 07:10	114.2	↓-2.5
4/20 07:20	111.6	↓-2.6
4/20 07:30	108.8	↓-2.8
4/20 07:40	105.9	↓-2.9
4/20 07:50	102.8	↓-3.1
4/20 08:00	99.7	↓-3.1
4/20 08:10	96.4	↓-3.3
4/20 08:20	93.1	↓-3.3
4/20 08:30	89.8	↓-3.3
4/20 08:40	86.5	↓-3.3
4/20 08:50	83.1	↓-3.4
4/20 09:00	79.7	↓-3.4
4/20 09:10	76.3	↓-3.4
4/20 09:20	72.9	↓-3.4
4/20 09:30	69.4	↓-3.5	最大潮位差
4/20 09:40	66.0	↓-3.4
4/20 09:50	62.6	↓-3.4
4/20 10:00	59.1	↓-3.5	最大潮位差
4/20 10:10	55.7	↓-3.4
4/20 10:20	52.4	↓-3.3
4/20 10:30	49.1	↓-3.3
4/20 10:40	45.9	↓-3.2
4/20 10:50	42.8	↓-3.1
4/20 11:00	39.9	↓-2.9
4/20 11:10	37.1	↓-2.8
4/20 11:20	34.6	↓-2.5
4/20 11:30	32.3	↓-2.3
4/20 11:40	30.2	↓-2.1
4/20 11:50	28.4	↓-1.8
4/20 12:00	26.9	↓-1.5
4/20 12:10	25.8	↓-1.1
4/20 12:20	24.9	↓-0.9
4/20 12:30	24.3	↓-0.6
4/20 12:40	24.1	↓-0.2	干潮
4/20 12:50	24.1	0
4/20 13:00	24.4	↑0.3
4/20 13:10	25.0	↑0.6
4/20 13:20	25.8	↑0.8
4/20 13:30	26.8	↑1.0
4/20 13:40	28.1	↑1.3
4/20 13:50	29.5	↑1.4
4/20 14:00	31.0	↑1.5
4/20 14:10	32.7	↑1.7
4/20 14:20	34.5	↑1.8
4/20 14:30	36.5	↑2.0
4/20 14:40	38.5	↑2.0
4/20 14:50	40.6	↑2.1
4/20 15:00	42.9	↑2.3
4/20 15:10	45.2	↑2.3
4/20 15:20	47.7	↑2.5
4/20 15:30	50.3	↑2.6
4/20 15:40	52.9	↑2.6
4/20 15:50	55.7	↑2.8
4/20 16:00	58.6	↑2.9
4/20 16:10	61.5	↑2.9
4/20 16:20	64.6	↑3.1
4/20 16:30	67.6	↑3.0
4/20 16:40	70.7	↑3.1
4/20 16:50	73.8	↑3.1
4/20 17:00	76.9	↑3.1
4/20 17:10	80.0	↑3.1
4/20 17:20	82.9	↑2.9
4/20 17:30	85.7	↑2.8
4/20 17:40	88.4	↑2.7
4/20 17:50	90.9	↑2.5
4/20 18:00	93.2	↑2.3
4/20 18:10	95.2	↑2.0
4/20 18:20	97.1	↑1.9
4/20 18:30	98.7	↑1.6
4/20 18:40	100.0	↑1.3
4/20 18:50	101.1	↑1.1
4/20 19:00	102.0	↑0.9
4/20 19:10	102.7	↑0.7
4/20 19:20	103.2	↑0.5
4/20 19:30	103.5	↑0.3
4/20 19:40	103.7	↑0.2	満潮
4/20 19:50	103.7	0
4/20 20:00	103.6	↓-0.1
4/20 20:10	103.5	↓-0.1
4/20 20:20	103.2	↓-0.3
4/20 20:30	102.9	↓-0.3
4/20 20:40	102.6	↓-0.3
4/20 20:50	102.1	↓-0.5
4/20 21:00	101.7	↓-0.4
4/20 21:10	101.2	↓-0.5
4/20 21:20	100.6	↓-0.6
4/20 21:30	100.0	↓-0.6
4/20 21:40	99.3	↓-0.7
4/20 21:50	98.5	↓-0.8
4/20 22:00	97.7	↓-0.8
4/20 22:10	96.7	↓-1.0
4/20 22:20	95.8	↓-0.9
4/20 22:30	94.7	↓-1.1
4/20 22:40	93.6	↓-1.1
4/20 22:50	92.5	↓-1.1
4/20 23:00	91.3	↓-1.2
4/20 23:10	90.1	↓-1.2
4/20 23:20	89.0	↓-1.1
4/20 23:30	87.9	↓-1.1
4/20 23:40	86.8	↓-1.1
4/20 23:50	85.9	↓-0.9