13 (金)	13:17	05:15	23:16	18:33
	122cm	50cm	117cm	102cm
長潮 出 05:43 入 17:05 出 - 入 13:50

日立（茨城）2028年10月13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
10/13 00:00	100.1	↓-1.7
10/13 00:10	98.3	↓-1.8
10/13 00:20	96.5	↓-1.8
10/13 00:30	94.6	↓-1.9
10/13 00:40	92.6	↓-2.0
10/13 00:50	90.6	↓-2.0
10/13 01:00	88.6	↓-2.0
10/13 01:10	86.6	↓-2.0
10/13 01:20	84.5	↓-2.1
10/13 01:30	82.4	↓-2.1
10/13 01:40	80.3	↓-2.1
10/13 01:50	78.2	↓-2.1
10/13 02:00	76.1	↓-2.1
10/13 02:10	73.9	↓-2.2
10/13 02:20	71.9	↓-2.0
10/13 02:30	69.8	↓-2.1
10/13 02:40	67.8	↓-2.0
10/13 02:50	65.8	↓-2.0
10/13 03:00	63.9	↓-1.9
10/13 03:10	62.0	↓-1.9
10/13 03:20	60.3	↓-1.7
10/13 03:30	58.6	↓-1.7
10/13 03:40	57.1	↓-1.5
10/13 03:50	55.7	↓-1.4
10/13 04:00	54.4	↓-1.3
10/13 04:10	53.3	↓-1.1
10/13 04:20	52.3	↓-1.0
10/13 04:30	51.5	↓-0.8
10/13 04:40	50.8	↓-0.7
10/13 04:50	50.3	↓-0.5
10/13 05:00	50.0	↓-0.3
10/13 05:10	49.8	↓-0.2	干潮
10/13 05:20	49.8	0
10/13 05:30	50.0	↑0.2
10/13 05:40	50.4	↑0.4
10/13 05:50	50.9	↑0.5
10/13 06:00	51.6	↑0.7
10/13 06:10	52.4	↑0.8
10/13 06:20	53.4	↑1.0
10/13 06:30	54.5	↑1.1
10/13 06:40	55.8	↑1.3
10/13 06:50	57.2	↑1.4
10/13 07:00	58.8	↑1.6
10/13 07:10	60.4	↑1.6
10/13 07:20	62.2	↑1.8
10/13 07:30	64.1	↑1.9
10/13 07:40	66.1	↑2.0
10/13 07:50	68.2	↑2.1
10/13 08:00	70.4	↑2.2
10/13 08:10	72.7	↑2.3
10/13 08:20	75.0	↑2.3
10/13 08:30	77.4	↑2.4
10/13 08:40	79.8	↑2.4
10/13 08:50	82.2	↑2.4
10/13 09:00	84.7	↑2.5	最大潮位差
10/13 09:10	87.1	↑2.4
10/13 09:20	89.5	↑2.4
10/13 09:30	91.9	↑2.4
10/13 09:40	94.3	↑2.4
10/13 09:50	96.6	↑2.3
10/13 10:00	98.9	↑2.3
10/13 10:10	101.1	↑2.2
10/13 10:20	103.2	↑2.1
10/13 10:30	105.2	↑2.0
10/13 10:40	107.1	↑1.9
10/13 10:50	108.9	↑1.8
10/13 11:00	110.5	↑1.6
10/13 11:10	112.1	↑1.6
10/13 11:20	113.6	↑1.5
10/13 11:30	114.9	↑1.3
10/13 11:40	116.1	↑1.2
10/13 11:50	117.2	↑1.1
10/13 12:00	118.2	↑1.0
10/13 12:10	119.1	↑0.9
10/13 12:20	119.8	↑0.7
10/13 12:30	120.4	↑0.6
10/13 12:40	120.9	↑0.5
10/13 12:50	121.3	↑0.4
10/13 13:00	121.5	↑0.2
10/13 13:10	121.6	↑0.1	満潮
10/13 13:20	121.6	0
10/13 13:30	121.5	↓-0.1
10/13 13:40	121.3	↓-0.2
10/13 13:50	121.0	↓-0.3
10/13 14:00	120.6	↓-0.4
10/13 14:10	120.1	↓-0.5
10/13 14:20	119.4	↓-0.7
10/13 14:30	118.7	↓-0.7
10/13 14:40	117.9	↓-0.8
10/13 14:50	117.1	↓-0.8
10/13 15:00	116.2	↓-0.9
10/13 15:10	115.2	↓-1.0
10/13 15:20	114.2	↓-1.0
10/13 15:30	113.2	↓-1.0
10/13 15:40	112.2	↓-1.0
10/13 15:50	111.1	↓-1.1
10/13 16:00	110.1	↓-1.0
10/13 16:10	109.1	↓-1.0
10/13 16:20	108.2	↓-0.9
10/13 16:30	107.2	↓-1.0
10/13 16:40	106.4	↓-0.8
10/13 16:50	105.6	↓-0.8
10/13 17:00	104.8	↓-0.8
10/13 17:10	104.2	↓-0.6
10/13 17:20	103.6	↓-0.6
10/13 17:30	103.1	↓-0.5
10/13 17:40	102.6	↓-0.5
10/13 17:50	102.2	↓-0.4
10/13 18:00	102.0	↓-0.2
10/13 18:10	101.8	↓-0.2
10/13 18:20	101.6	↓-0.2
10/13 18:30	101.6	0	干潮
10/13 18:40	101.6	0
10/13 18:50	101.7	↑0.1
10/13 19:00	101.9	↑0.2
10/13 19:10	102.1	↑0.2
10/13 19:20	102.4	↑0.3
10/13 19:30	102.8	↑0.4
10/13 19:40	103.3	↑0.5
10/13 19:50	103.8	↑0.5
10/13 20:00	104.4	↑0.6
10/13 20:10	105.1	↑0.7
10/13 20:20	105.7	↑0.6
10/13 20:30	106.5	↑0.8
10/13 20:40	107.3	↑0.8
10/13 20:50	108.1	↑0.8
10/13 21:00	108.9	↑0.8
10/13 21:10	109.7	↑0.8
10/13 21:20	110.6	↑0.9
10/13 21:30	111.4	↑0.8
10/13 21:40	112.2	↑0.8
10/13 21:50	113.0	↑0.8
10/13 22:00	113.7	↑0.7
10/13 22:10	114.3	↑0.6
10/13 22:20	114.9	↑0.6
10/13 22:30	115.4	↑0.5
10/13 22:40	115.8	↑0.4
10/13 22:50	116.2	↑0.4
10/13 23:00	116.4	↑0.2
10/13 23:10	116.5	↑0.1	満潮
10/13 23:20	116.5	0
10/13 23:30	116.4	↓-0.1
10/13 23:40	116.2	↓-0.2
10/13 23:50	115.8	↓-0.4