20 (水)	03:41	10:02	16:43	22:27
	109cm	8cm	119cm	46cm
大潮 出 04:58 入 18:17 出 04:51 入 18:31 潮干狩り ◎ 08:03～12:00

那珂湊（茨城）2061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	57.8	↑2.9
4/20 00:10	60.9	↑3.1
4/20 00:20	64.0	↑3.1
4/20 00:30	67.2	↑3.2
4/20 00:40	70.4	↑3.2
4/20 00:50	73.7	↑3.3
4/20 01:00	76.9	↑3.2
4/20 01:10	80.1	↑3.2
4/20 01:20	83.2	↑3.1
4/20 01:30	86.3	↑3.1
4/20 01:40	89.2	↑2.9
4/20 01:50	92.0	↑2.8
4/20 02:00	94.7	↑2.7
4/20 02:10	97.1	↑2.4
4/20 02:20	99.4	↑2.3
4/20 02:30	101.5	↑2.1
4/20 02:40	103.3	↑1.8
4/20 02:50	104.9	↑1.6
4/20 03:00	106.2	↑1.3
4/20 03:10	107.2	↑1.0
4/20 03:20	108.0	↑0.8
4/20 03:30	108.5	↑0.5
4/20 03:40	108.6	↑0.1	満潮
4/20 03:50	108.4	↓-0.2
4/20 04:00	108.0	↓-0.4
4/20 04:10	107.2	↓-0.8
4/20 04:20	106.1	↓-1.1
4/20 04:30	104.7	↓-1.4
4/20 04:40	102.9	↓-1.8
4/20 04:50	100.9	↓-2.0
4/20 05:00	98.6	↓-2.3
4/20 05:10	96.1	↓-2.5
4/20 05:20	93.2	↓-2.9
4/20 05:30	90.2	↓-3.0
4/20 05:40	86.9	↓-3.3
4/20 05:50	83.4	↓-3.5
4/20 06:00	79.7	↓-3.7
4/20 06:10	75.9	↓-3.8
4/20 06:20	71.9	↓-4.0
4/20 06:30	67.9	↓-4.0
4/20 06:40	63.8	↓-4.1
4/20 06:50	59.6	↓-4.2
4/20 07:00	55.4	↓-4.2
4/20 07:10	51.2	↓-4.2
4/20 07:20	47.1	↓-4.1
4/20 07:30	43.0	↓-4.1
4/20 07:40	39.1	↓-3.9
4/20 07:50	35.3	↓-3.8
4/20 08:00	31.6	↓-3.7
4/20 08:10	28.1	↓-3.5
4/20 08:20	24.9	↓-3.2
4/20 08:30	21.8	↓-3.1
4/20 08:40	19.1	↓-2.7
4/20 08:50	16.5	↓-2.6
4/20 09:00	14.3	↓-2.2
4/20 09:10	12.4	↓-1.9
4/20 09:20	10.9	↓-1.5
4/20 09:30	9.6	↓-1.3
4/20 09:40	8.7	↓-0.9
4/20 09:50	8.2	↓-0.5
4/20 10:00	8.0	↓-0.2	干潮
4/20 10:10	8.1	↑0.1
4/20 10:20	8.6	↑0.5
4/20 10:30	9.5	↑0.9
4/20 10:40	10.7	↑1.2
4/20 10:50	12.2	↑1.5
4/20 11:00	14.0	↑1.8
4/20 11:10	16.2	↑2.2
4/20 11:20	18.6	↑2.4
4/20 11:30	21.3	↑2.7
4/20 11:40	24.3	↑3.0
4/20 11:50	27.5	↑3.2
4/20 12:00	31.0	↑3.5
4/20 12:10	34.6	↑3.6
4/20 12:20	38.4	↑3.8
4/20 12:30	42.4	↑4.0
4/20 12:40	46.5	↑4.1
4/20 12:50	50.6	↑4.1
4/20 13:00	54.9	↑4.3	最大潮位差
4/20 13:10	59.2	↑4.3	最大潮位差
4/20 13:20	63.5	↑4.3	最大潮位差
4/20 13:30	67.8	↑4.3	最大潮位差
4/20 13:40	72.1	↑4.3	最大潮位差
4/20 13:50	76.3	↑4.2
4/20 14:00	80.5	↑4.2
4/20 14:10	84.5	↑4.0
4/20 14:20	88.4	↑3.9
4/20 14:30	92.2	↑3.8
4/20 14:40	95.7	↑3.5
4/20 14:50	99.1	↑3.4
4/20 15:00	102.3	↑3.2
4/20 15:10	105.2	↑2.9
4/20 15:20	107.8	↑2.6
4/20 15:30	110.2	↑2.4
4/20 15:40	112.3	↑2.1
4/20 15:50	114.2	↑1.9
4/20 16:00	115.7	↑1.5
4/20 16:10	116.9	↑1.2
4/20 16:20	117.7	↑0.8
4/20 16:30	118.3	↑0.6
4/20 16:40	118.5	↑0.2	満潮
4/20 16:50	118.4	↓-0.1
4/20 17:00	118.0	↓-0.4
4/20 17:10	117.3	↓-0.7
4/20 17:20	116.3	↓-1.0
4/20 17:30	115.0	↓-1.3
4/20 17:40	113.4	↓-1.6
4/20 17:50	111.5	↓-1.9
4/20 18:00	109.4	↓-2.1
4/20 18:10	107.1	↓-2.3
4/20 18:20	104.5	↓-2.6
4/20 18:30	101.8	↓-2.7
4/20 18:40	98.9	↓-2.9
4/20 18:50	95.8	↓-3.1
4/20 19:00	92.7	↓-3.1
4/20 19:10	89.5	↓-3.2
4/20 19:20	86.2	↓-3.3
4/20 19:30	82.8	↓-3.4
4/20 19:40	79.5	↓-3.3
4/20 19:50	76.2	↓-3.3
4/20 20:00	73.0	↓-3.2
4/20 20:10	69.8	↓-3.2
4/20 20:20	66.8	↓-3.0
4/20 20:30	63.8	↓-3.0
4/20 20:40	61.1	↓-2.7
4/20 20:50	58.5	↓-2.6
4/20 21:00	56.1	↓-2.4
4/20 21:10	54.0	↓-2.1
4/20 21:20	52.0	↓-2.0
4/20 21:30	50.3	↓-1.7
4/20 21:40	48.9	↓-1.4
4/20 21:50	47.8	↓-1.1
4/20 22:00	46.9	↓-0.9
4/20 22:10	46.3	↓-0.6
4/20 22:20	46.0	↓-0.3	干潮
4/20 22:30	45.9	↓-0.1
4/20 22:40	46.2	↑0.3
4/20 22:50	46.7	↑0.5
4/20 23:00	47.5	↑0.8
4/20 23:10	48.6	↑1.1
4/20 23:20	49.9	↑1.3
4/20 23:30	51.4	↑1.5
4/20 23:40	53.2	↑1.8
4/20 23:50	55.2	↑2.0