20 (月)	02:40	09:24	16:02	21:39
	135cm	27cm	132cm	65cm
大潮 出 05:24 入 17:40 出 03:57 入 17:20 潮干狩り ○ 08:35～10:11

那珂湊（茨城）2055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	107.1	↑2.7
9/20 00:10	109.8	↑2.7
9/20 00:20	112.4	↑2.6
9/20 00:30	115.0	↑2.6
9/20 00:40	117.5	↑2.5
9/20 00:50	119.9	↑2.4
9/20 01:00	122.2	↑2.3
9/20 01:10	124.3	↑2.1
9/20 01:20	126.2	↑1.9
9/20 01:30	128.0	↑1.8
9/20 01:40	129.6	↑1.6
9/20 01:50	131.0	↑1.4
9/20 02:00	132.1	↑1.1
9/20 02:10	133.0	↑0.9
9/20 02:20	133.6	↑0.6
9/20 02:30	134.0	↑0.4	満潮
9/20 02:40	134.1	↑0.1	満潮
9/20 02:50	133.9	↓-0.2
9/20 03:00	133.4	↓-0.5
9/20 03:10	132.7	↓-0.7
9/20 03:20	131.6	↓-1.1
9/20 03:30	130.3	↓-1.3
9/20 03:40	128.7	↓-1.6
9/20 03:50	126.8	↓-1.9
9/20 04:00	124.6	↓-2.2
9/20 04:10	122.2	↓-2.4
9/20 04:20	119.5	↓-2.7
9/20 04:30	116.6	↓-2.9
9/20 04:40	113.4	↓-3.2
9/20 04:50	110.1	↓-3.3
9/20 05:00	106.5	↓-3.6
9/20 05:10	102.8	↓-3.7
9/20 05:20	99.0	↓-3.8
9/20 05:30	95.0	↓-4.0
9/20 05:40	90.9	↓-4.1
9/20 05:50	86.8	↓-4.1
9/20 06:00	82.6	↓-4.2
9/20 06:10	78.3	↓-4.3	最大潮位差
9/20 06:20	74.1	↓-4.2
9/20 06:30	69.9	↓-4.2
9/20 06:40	65.8	↓-4.1
9/20 06:50	61.8	↓-4.0
9/20 07:00	57.8	↓-4.0
9/20 07:10	54.0	↓-3.8
9/20 07:20	50.4	↓-3.6
9/20 07:30	47.0	↓-3.4
9/20 07:40	43.7	↓-3.3
9/20 07:50	40.7	↓-3.0
9/20 08:00	38.0	↓-2.7
9/20 08:10	35.5	↓-2.5
9/20 08:20	33.3	↓-2.2
9/20 08:30	31.4	↓-1.9
9/20 08:40	29.8	↓-1.6
9/20 08:50	28.6	↓-1.2
9/20 09:00	27.6	↓-1.0
9/20 09:10	27.0	↓-0.6
9/20 09:20	26.8	↓-0.2	干潮
9/20 09:30	26.9	↑0.1
9/20 09:40	27.3	↑0.4
9/20 09:50	28.0	↑0.7
9/20 10:00	29.1	↑1.1
9/20 10:10	30.5	↑1.4
9/20 10:20	32.3	↑1.8
9/20 10:30	34.3	↑2.0
9/20 10:40	36.6	↑2.3
9/20 10:50	39.2	↑2.6
9/20 11:00	42.0	↑2.8
9/20 11:10	45.0	↑3.0
9/20 11:20	48.3	↑3.3
9/20 11:30	51.8	↑3.5
9/20 11:40	55.4	↑3.6
9/20 11:50	59.2	↑3.8
9/20 12:00	63.1	↑3.9
9/20 12:10	67.1	↑4.0
9/20 12:20	71.2	↑4.1
9/20 12:30	75.3	↑4.1
9/20 12:40	79.4	↑4.1
9/20 12:50	83.6	↑4.2
9/20 13:00	87.7	↑4.1
9/20 13:10	91.7	↑4.0
9/20 13:20	95.7	↑4.0
9/20 13:30	99.5	↑3.8
9/20 13:40	103.3	↑3.8
9/20 13:50	106.8	↑3.5
9/20 14:00	110.2	↑3.4
9/20 14:10	113.5	↑3.3
9/20 14:20	116.5	↑3.0
9/20 14:30	119.2	↑2.7
9/20 14:40	121.8	↑2.6
9/20 14:50	124.0	↑2.2
9/20 15:00	126.0	↑2.0
9/20 15:10	127.7	↑1.7
9/20 15:20	129.1	↑1.4
9/20 15:30	130.2	↑1.1
9/20 15:40	131.0	↑0.8
9/20 15:50	131.5	↑0.5
9/20 16:00	131.7	↑0.2	満潮
9/20 16:10	131.6	↓-0.1
9/20 16:20	131.2	↓-0.4
9/20 16:30	130.5	↓-0.7
9/20 16:40	129.5	↓-1.0
9/20 16:50	128.2	↓-1.3
9/20 17:00	126.7	↓-1.5
9/20 17:10	124.9	↓-1.8
9/20 17:20	122.9	↓-2.0
9/20 17:30	120.6	↓-2.3
9/20 17:40	118.2	↓-2.4
9/20 17:50	115.6	↓-2.6
9/20 18:00	112.8	↓-2.8
9/20 18:10	109.9	↓-2.9
9/20 18:20	107.0	↓-2.9
9/20 18:30	103.9	↓-3.1
9/20 18:40	100.8	↓-3.1
9/20 18:50	97.7	↓-3.1
9/20 19:00	94.6	↓-3.1
9/20 19:10	91.5	↓-3.1
9/20 19:20	88.5	↓-3.0
9/20 19:30	85.5	↓-3.0
9/20 19:40	82.7	↓-2.8
9/20 19:50	80.0	↓-2.7
9/20 20:00	77.5	↓-2.5
9/20 20:10	75.1	↓-2.4
9/20 20:20	73.0	↓-2.1
9/20 20:30	71.0	↓-2.0
9/20 20:40	69.3	↓-1.7
9/20 20:50	67.9	↓-1.4
9/20 21:00	66.7	↓-1.2
9/20 21:10	65.7	↓-1.0
9/20 21:20	65.1	↓-0.6
9/20 21:30	64.7	↓-0.4	干潮
9/20 21:40	64.6	↓-0.1
9/20 21:50	64.8	↑0.2
9/20 22:00	65.3	↑0.5
9/20 22:10	66.0	↑0.7
9/20 22:20	67.1	↑1.1
9/20 22:30	68.4	↑1.3
9/20 22:40	69.9	↑1.5
9/20 22:50	71.7	↑1.8
9/20 23:00	73.8	↑2.1
9/20 23:10	76.0	↑2.2
9/20 23:20	78.5	↑2.5
9/20 23:30	81.1	↑2.6
9/20 23:40	83.9	↑2.8
9/20 23:50	86.8	↑2.9