20 (月)	08:19	01:28	19:04	13:02
	111cm	47cm	124cm	85cm
小潮 出 05:24 入 17:39 出 21:33 入 11:15

那珂湊（茨城）2038年09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
9/20 00:00	54.7	↓-2.0
9/20 00:10	52.9	↓-1.8
9/20 00:20	51.3	↓-1.6
9/20 00:30	49.9	↓-1.4
9/20 00:40	48.7	↓-1.2
9/20 00:50	47.8	↓-0.9
9/20 01:00	47.1	↓-0.7
9/20 01:10	46.6	↓-0.5
9/20 01:20	46.3	↓-0.3	干潮
9/20 01:30	46.3	0
9/20 01:40	46.5	↑0.2
9/20 01:50	46.9	↑0.4
9/20 02:00	47.5	↑0.6
9/20 02:10	48.3	↑0.8
9/20 02:20	49.3	↑1.0
9/20 02:30	50.4	↑1.1
9/20 02:40	51.8	↑1.4
9/20 02:50	53.2	↑1.4
9/20 03:00	54.9	↑1.7
9/20 03:10	56.7	↑1.8
9/20 03:20	58.5	↑1.8
9/20 03:30	60.5	↑2.0
9/20 03:40	62.6	↑2.1
9/20 03:50	64.8	↑2.2
9/20 04:00	67.0	↑2.2
9/20 04:10	69.3	↑2.3
9/20 04:20	71.7	↑2.4
9/20 04:30	74.1	↑2.4
9/20 04:40	76.5	↑2.4
9/20 04:50	78.8	↑2.3
9/20 05:00	81.2	↑2.4
9/20 05:10	83.6	↑2.4
9/20 05:20	85.9	↑2.3
9/20 05:30	88.2	↑2.3
9/20 05:40	90.5	↑2.3
9/20 05:50	92.6	↑2.1
9/20 06:00	94.7	↑2.1
9/20 06:10	96.7	↑2.0
9/20 06:20	98.6	↑1.9
9/20 06:30	100.3	↑1.7
9/20 06:40	102.0	↑1.7
9/20 06:50	103.5	↑1.5
9/20 07:00	104.9	↑1.4
9/20 07:10	106.1	↑1.2
9/20 07:20	107.1	↑1.0
9/20 07:30	108.0	↑0.9
9/20 07:40	108.8	↑0.8
9/20 07:50	109.3	↑0.5
9/20 08:00	109.7	↑0.4
9/20 08:10	110.0	↑0.3	満潮
9/20 08:20	110.0	0
9/20 08:30	109.9	↓-0.1
9/20 08:40	109.6	↓-0.3
9/20 08:50	109.2	↓-0.4
9/20 09:00	108.6	↓-0.6
9/20 09:10	107.9	↓-0.7
9/20 09:20	107.1	↓-0.8
9/20 09:30	106.1	↓-1.0
9/20 09:40	105.0	↓-1.1
9/20 09:50	103.8	↓-1.2
9/20 10:00	102.6	↓-1.2
9/20 10:10	101.3	↓-1.3
9/20 10:20	100.0	↓-1.3
9/20 10:30	98.6	↓-1.4
9/20 10:40	97.2	↓-1.4
9/20 10:50	95.8	↓-1.4
9/20 11:00	94.4	↓-1.4
9/20 11:10	93.1	↓-1.3
9/20 11:20	91.9	↓-1.2
9/20 11:30	90.7	↓-1.2
9/20 11:40	89.5	↓-1.2
9/20 11:50	88.5	↓-1.0
9/20 12:00	87.6	↓-0.9
9/20 12:10	86.8	↓-0.8
9/20 12:20	86.2	↓-0.6
9/20 12:30	85.6	↓-0.6
9/20 12:40	85.3	↓-0.3
9/20 12:50	85.0	↓-0.3
9/20 13:00	84.9	↓-0.1	干潮
9/20 13:10	85.0	↑0.1
9/20 13:20	85.2	↑0.2
9/20 13:30	85.5	↑0.3
9/20 13:40	86.0	↑0.5
9/20 13:50	86.7	↑0.7
9/20 14:00	87.4	↑0.7
9/20 14:10	88.3	↑0.9
9/20 14:20	89.3	↑1.0
9/20 14:30	90.5	↑1.2
9/20 14:40	91.7	↑1.2
9/20 14:50	93.0	↑1.3
9/20 15:00	94.4	↑1.4
9/20 15:10	95.9	↑1.5
9/20 15:20	97.4	↑1.5
9/20 15:30	99.0	↑1.6
9/20 15:40	100.6	↑1.6
9/20 15:50	102.2	↑1.6
9/20 16:00	103.9	↑1.7
9/20 16:10	105.5	↑1.6
9/20 16:20	107.2	↑1.7
9/20 16:30	108.8	↑1.6
9/20 16:40	110.4	↑1.6
9/20 16:50	111.9	↑1.5
9/20 17:00	113.4	↑1.5
9/20 17:10	114.9	↑1.5
9/20 17:20	116.2	↑1.3
9/20 17:30	117.5	↑1.3
9/20 17:40	118.7	↑1.2
9/20 17:50	119.8	↑1.1
9/20 18:00	120.8	↑1.0
9/20 18:10	121.6	↑0.8
9/20 18:20	122.3	↑0.7
9/20 18:30	122.9	↑0.6
9/20 18:40	123.4	↑0.5
9/20 18:50	123.7	↑0.3
9/20 19:00	123.8	↑0.1	満潮
9/20 19:10	123.8	0
9/20 19:20	123.6	↓-0.2
9/20 19:30	123.2	↓-0.4
9/20 19:40	122.6	↓-0.6
9/20 19:50	121.9	↓-0.7
9/20 20:00	120.9	↓-1.0
9/20 20:10	119.8	↓-1.1
9/20 20:20	118.5	↓-1.3
9/20 20:30	117.0	↓-1.5
9/20 20:40	115.4	↓-1.6
9/20 20:50	113.6	↓-1.8
9/20 21:00	111.6	↓-2.0
9/20 21:10	109.4	↓-2.2
9/20 21:20	107.2	↓-2.2
9/20 21:30	104.7	↓-2.5
9/20 21:40	102.2	↓-2.5
9/20 21:50	99.5	↓-2.7
9/20 22:00	96.8	↓-2.7
9/20 22:10	94.0	↓-2.8
9/20 22:20	91.1	↓-2.9
9/20 22:30	88.2	↓-2.9
9/20 22:40	85.2	↓-3.0	最大潮位差
9/20 22:50	82.3	↓-2.9
9/20 23:00	79.3	↓-3.0	最大潮位差
9/20 23:10	76.4	↓-2.9
9/20 23:20	73.6	↓-2.8
9/20 23:30	70.8	↓-2.8
9/20 23:40	68.1	↓-2.7
9/20 23:50	65.5	↓-2.6