13 (火)	08:45	01:09	18:19	12:52
	117cm	21cm	127cm	100cm
中潮 出 05:44 入 17:05 出 11:30 入 21:32

那珂湊（茨城）2048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	27.0	↓-2.0
10/13 00:10	25.3	↓-1.7
10/13 00:20	23.8	↓-1.5
10/13 00:30	22.7	↓-1.1
10/13 00:40	21.8	↓-0.9
10/13 00:50	21.1	↓-0.7
10/13 01:00	20.8	↓-0.3	干潮
10/13 01:10	20.7	↓-0.1
10/13 01:20	20.9	↑0.2
10/13 01:30	21.4	↑0.5
10/13 01:40	22.1	↑0.7
10/13 01:50	23.1	↑1.0
10/13 02:00	24.3	↑1.2
10/13 02:10	25.7	↑1.4
10/13 02:20	27.4	↑1.7
10/13 02:30	29.2	↑1.8
10/13 02:40	31.3	↑2.1
10/13 02:50	33.5	↑2.2
10/13 03:00	35.9	↑2.4
10/13 03:10	38.5	↑2.6
10/13 03:20	41.2	↑2.7
10/13 03:30	44.0	↑2.8
10/13 03:40	47.0	↑3.0
10/13 03:50	50.0	↑3.0
10/13 04:00	53.1	↑3.1
10/13 04:10	56.3	↑3.2
10/13 04:20	59.5	↑3.2
10/13 04:30	62.8	↑3.3
10/13 04:40	66.1	↑3.3
10/13 04:50	69.4	↑3.3
10/13 05:00	72.7	↑3.3
10/13 05:10	76.0	↑3.3
10/13 05:20	79.2	↑3.2
10/13 05:30	82.4	↑3.2
10/13 05:40	85.5	↑3.1
10/13 05:50	88.5	↑3.0
10/13 06:00	91.4	↑2.9
10/13 06:10	94.3	↑2.9
10/13 06:20	96.9	↑2.6
10/13 06:30	99.5	↑2.6
10/13 06:40	101.9	↑2.4
10/13 06:50	104.1	↑2.2
10/13 07:00	106.2	↑2.1
10/13 07:10	108.1	↑1.9
10/13 07:20	109.8	↑1.7
10/13 07:30	111.3	↑1.5
10/13 07:40	112.6	↑1.3
10/13 07:50	113.7	↑1.1
10/13 08:00	114.7	↑1.0
10/13 08:10	115.4	↑0.7
10/13 08:20	115.9	↑0.5
10/13 08:30	116.3	↑0.4
10/13 08:40	116.5	↑0.2	満潮
10/13 08:50	116.4	↓-0.1
10/13 09:00	116.3	↓-0.1
10/13 09:10	115.9	↓-0.4
10/13 09:20	115.5	↓-0.4
10/13 09:30	114.9	↓-0.6
10/13 09:40	114.1	↓-0.8
10/13 09:50	113.3	↓-0.8
10/13 10:00	112.4	↓-0.9
10/13 10:10	111.5	↓-0.9
10/13 10:20	110.4	↓-1.1
10/13 10:30	109.4	↓-1.0
10/13 10:40	108.3	↓-1.1
10/13 10:50	107.3	↓-1.0
10/13 11:00	106.2	↓-1.1
10/13 11:10	105.2	↓-1.0
10/13 11:20	104.3	↓-0.9
10/13 11:30	103.3	↓-1.0
10/13 11:40	102.5	↓-0.8
10/13 11:50	101.8	↓-0.7
10/13 12:00	101.1	↓-0.7
10/13 12:10	100.6	↓-0.5
10/13 12:20	100.2	↓-0.4
10/13 12:30	99.8	↓-0.4
10/13 12:40	99.6	↓-0.2
10/13 12:50	99.6	0	干潮
10/13 13:00	99.6	0
10/13 13:10	99.8	↑0.2
10/13 13:20	100.0	↑0.2
10/13 13:30	100.4	↑0.4
10/13 13:40	101.0	↑0.6
10/13 13:50	101.6	↑0.6
10/13 14:00	102.3	↑0.7
10/13 14:10	103.1	↑0.8
10/13 14:20	104.0	↑0.9
10/13 14:30	105.0	↑1.0
10/13 14:40	106.1	↑1.1
10/13 14:50	107.2	↑1.1
10/13 15:00	108.3	↑1.1
10/13 15:10	109.5	↑1.2
10/13 15:20	110.8	↑1.3
10/13 15:30	112.0	↑1.2
10/13 15:40	113.3	↑1.3
10/13 15:50	114.5	↑1.2
10/13 16:00	115.8	↑1.3
10/13 16:10	117.0	↑1.2
10/13 16:20	118.2	↑1.2
10/13 16:30	119.4	↑1.2
10/13 16:40	120.5	↑1.1
10/13 16:50	121.5	↑1.0
10/13 17:00	122.5	↑1.0
10/13 17:10	123.4	↑0.9
10/13 17:20	124.2	↑0.8
10/13 17:30	124.9	↑0.7
10/13 17:40	125.5	↑0.6
10/13 17:50	126.0	↑0.5
10/13 18:00	126.3	↑0.3
10/13 18:10	126.5	↑0.2	満潮
10/13 18:20	126.6	↑0.1
10/13 18:30	126.5	↓-0.1
10/13 18:40	126.2	↓-0.3
10/13 18:50	125.8	↓-0.4
10/13 19:00	125.2	↓-0.6
10/13 19:10	124.4	↓-0.8
10/13 19:20	123.4	↓-1.0
10/13 19:30	122.2	↓-1.2
10/13 19:40	120.8	↓-1.4
10/13 19:50	119.2	↓-1.6
10/13 20:00	117.5	↓-1.7
10/13 20:10	115.5	↓-2.0
10/13 20:20	113.4	↓-2.1
10/13 20:30	111.1	↓-2.3
10/13 20:40	108.6	↓-2.5
10/13 20:50	105.9	↓-2.7
10/13 21:00	103.1	↓-2.8
10/13 21:10	100.2	↓-2.9
10/13 21:20	97.1	↓-3.1
10/13 21:30	93.9	↓-3.2
10/13 21:40	90.6	↓-3.3
10/13 21:50	87.2	↓-3.4
10/13 22:00	83.7	↓-3.5
10/13 22:10	80.2	↓-3.5
10/13 22:20	76.7	↓-3.5
10/13 22:30	73.2	↓-3.5
10/13 22:40	69.6	↓-3.6	最大潮位差
10/13 22:50	66.1	↓-3.5
10/13 23:00	62.7	↓-3.4
10/13 23:10	59.3	↓-3.4
10/13 23:20	56.1	↓-3.2
10/13 23:30	52.9	↓-3.2
10/13 23:40	49.9	↓-3.0
10/13 23:50	47.0	↓-2.9