20 (火)	08:13	03:43	-	16:42
	107cm	91cm	-	47cm
小潮 出 04:46 入 18:22 出 01:40 入 11:48

苫小牧（北海道）2055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	100.0	↓-0.3
4/20 00:10	99.6	↓-0.4
4/20 00:20	99.1	↓-0.5
4/20 00:30	98.6	↓-0.5
4/20 00:40	98.0	↓-0.6
4/20 00:50	97.4	↓-0.6
4/20 01:00	96.8	↓-0.6
4/20 01:10	96.1	↓-0.7
4/20 01:20	95.5	↓-0.6
4/20 01:30	94.9	↓-0.6
4/20 01:40	94.3	↓-0.6
4/20 01:50	93.8	↓-0.5
4/20 02:00	93.3	↓-0.5
4/20 02:10	92.8	↓-0.5
4/20 02:20	92.5	↓-0.3
4/20 02:30	92.1	↓-0.4
4/20 02:40	91.8	↓-0.3
4/20 02:50	91.6	↓-0.2
4/20 03:00	91.4	↓-0.2
4/20 03:10	91.2	↓-0.2
4/20 03:20	91.1	↓-0.1
4/20 03:30	91.0	↓-0.1
4/20 03:40	91.0	0	干潮
4/20 03:50	91.0	0
4/20 04:00	91.1	↑0.1
4/20 04:10	91.2	↑0.1
4/20 04:20	91.4	↑0.2
4/20 04:30	91.6	↑0.2
4/20 04:40	92.0	↑0.4
4/20 04:50	92.4	↑0.4
4/20 05:00	92.9	↑0.5
4/20 05:10	93.4	↑0.5
4/20 05:20	94.1	↑0.7
4/20 05:30	94.8	↑0.7
4/20 05:40	95.6	↑0.8
4/20 05:50	96.4	↑0.8
4/20 06:00	97.3	↑0.9
4/20 06:10	98.3	↑1.0
4/20 06:20	99.2	↑0.9
4/20 06:30	100.2	↑1.0
4/20 06:40	101.1	↑0.9
4/20 06:50	102.0	↑0.9
4/20 07:00	102.9	↑0.9
4/20 07:10	103.6	↑0.7
4/20 07:20	104.3	↑0.7
4/20 07:30	104.9	↑0.6
4/20 07:40	105.4	↑0.5
4/20 07:50	105.7	↑0.3
4/20 08:00	105.9	↑0.2
4/20 08:10	106.0	↑0.1	満潮
4/20 08:20	106.0	0
4/20 08:30	105.8	↓-0.2
4/20 08:40	105.5	↓-0.3
4/20 08:50	105.1	↓-0.4
4/20 09:00	104.6	↓-0.5
4/20 09:10	104.0	↓-0.6
4/20 09:20	103.3	↓-0.7
4/20 09:30	102.5	↓-0.8
4/20 09:40	101.7	↓-0.8
4/20 09:50	100.7	↓-1.0
4/20 10:00	99.7	↓-1.0
4/20 10:10	98.7	↓-1.0
4/20 10:20	97.6	↓-1.1
4/20 10:30	96.4	↓-1.2
4/20 10:40	95.2	↓-1.2
4/20 10:50	93.9	↓-1.3
4/20 11:00	92.5	↓-1.4
4/20 11:10	91.0	↓-1.5
4/20 11:20	89.5	↓-1.5
4/20 11:30	87.9	↓-1.6
4/20 11:40	86.3	↓-1.6
4/20 11:50	84.6	↓-1.7
4/20 12:00	82.8	↓-1.8
4/20 12:10	80.9	↓-1.9
4/20 12:20	79.0	↓-1.9
4/20 12:30	77.1	↓-1.9
4/20 12:40	75.2	↓-1.9
4/20 12:50	73.2	↓-2.0	最大潮位差
4/20 13:00	71.3	↓-1.9
4/20 13:10	69.3	↓-2.0	最大潮位差
4/20 13:20	67.4	↓-1.9
4/20 13:30	65.6	↓-1.8
4/20 13:40	63.8	↓-1.8
4/20 13:50	62.0	↓-1.8
4/20 14:00	60.4	↓-1.6
4/20 14:10	58.8	↓-1.6
4/20 14:20	57.3	↓-1.5
4/20 14:30	55.9	↓-1.4
4/20 14:40	54.6	↓-1.3
4/20 14:50	53.3	↓-1.3
4/20 15:00	52.2	↓-1.1
4/20 15:10	51.2	↓-1.0
4/20 15:20	50.2	↓-1.0
4/20 15:30	49.4	↓-0.8
4/20 15:40	48.7	↓-0.7
4/20 15:50	48.0	↓-0.7
4/20 16:00	47.5	↓-0.5
4/20 16:10	47.1	↓-0.4
4/20 16:20	46.7	↓-0.4
4/20 16:30	46.5	↓-0.2
4/20 16:40	46.5	0	干潮
4/20 16:50	46.5	0
4/20 17:00	46.7	↑0.2
4/20 17:10	47.0	↑0.3
4/20 17:20	47.5	↑0.5
4/20 17:30	48.1	↑0.6
4/20 17:40	48.9	↑0.8
4/20 17:50	49.8	↑0.9
4/20 18:00	50.8	↑1.0
4/20 18:10	52.0	↑1.2
4/20 18:20	53.3	↑1.3
4/20 18:30	54.7	↑1.4
4/20 18:40	56.3	↑1.6
4/20 18:50	57.9	↑1.6
4/20 19:00	59.6	↑1.7
4/20 19:10	61.4	↑1.8
4/20 19:20	63.3	↑1.9
4/20 19:30	65.1	↑1.8
4/20 19:40	67.0	↑1.9
4/20 19:50	68.9	↑1.9
4/20 20:00	70.9	↑2.0	最大潮位差
4/20 20:10	72.8	↑1.9
4/20 20:20	74.6	↑1.8
4/20 20:30	76.5	↑1.9
4/20 20:40	78.3	↑1.8
4/20 20:50	80.1	↑1.8
4/20 21:00	81.9	↑1.8
4/20 21:10	83.6	↑1.7
4/20 21:20	85.3	↑1.7
4/20 21:30	86.9	↑1.6
4/20 21:40	88.5	↑1.6
4/20 21:50	90.1	↑1.6
4/20 22:00	91.6	↑1.5
4/20 22:10	93.0	↑1.4
4/20 22:20	94.4	↑1.4
4/20 22:30	95.8	↑1.4
4/20 22:40	97.0	↑1.2
4/20 22:50	98.2	↑1.2
4/20 23:00	99.3	↑1.1
4/20 23:10	100.4	↑1.1
4/20 23:20	101.3	↑0.9
4/20 23:30	102.1	↑0.8
4/20 23:40	102.8	↑0.7
4/20 23:50	103.3	↑0.5