20 (日)	07:08	00:42	19:52	13:32
	109cm	44cm	91cm	37cm
中潮 出 06:20 入 17:25 出 22:52 入 09:08

那珂湊（茨城）2033年02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
2/20 00:00	45.8	↓-1.0
2/20 00:10	45.0	↓-0.8
2/20 00:20	44.5	↓-0.5
2/20 00:30	44.1	↓-0.4
2/20 00:40	44.0	↓-0.1	干潮
2/20 00:50	44.1	↑0.1
2/20 01:00	44.4	↑0.3
2/20 01:10	44.9	↑0.5
2/20 01:20	45.7	↑0.8
2/20 01:30	46.6	↑0.9
2/20 01:40	47.8	↑1.2
2/20 01:50	49.1	↑1.3
2/20 02:00	50.6	↑1.5
2/20 02:10	52.3	↑1.7
2/20 02:20	54.1	↑1.8
2/20 02:30	56.1	↑2.0
2/20 02:40	58.2	↑2.1
2/20 02:50	60.4	↑2.2
2/20 03:00	62.7	↑2.3
2/20 03:10	65.1	↑2.4
2/20 03:20	67.5	↑2.4
2/20 03:30	70.0	↑2.5
2/20 03:40	72.5	↑2.5
2/20 03:50	75.1	↑2.6
2/20 04:00	77.6	↑2.5
2/20 04:10	80.2	↑2.6
2/20 04:20	82.7	↑2.5
2/20 04:30	85.2	↑2.5
2/20 04:40	87.6	↑2.4
2/20 04:50	90.0	↑2.4
2/20 05:00	92.2	↑2.2
2/20 05:10	94.4	↑2.2
2/20 05:20	96.5	↑2.1
2/20 05:30	98.4	↑1.9
2/20 05:40	100.2	↑1.8
2/20 05:50	101.8	↑1.6
2/20 06:00	103.3	↑1.5
2/20 06:10	104.6	↑1.3
2/20 06:20	105.7	↑1.1
2/20 06:30	106.6	↑0.9
2/20 06:40	107.3	↑0.7
2/20 06:50	107.8	↑0.5
2/20 07:00	108.1	↑0.3	満潮
2/20 07:10	108.2	↑0.1
2/20 07:20	108.0	↓-0.2
2/20 07:30	107.6	↓-0.4
2/20 07:40	106.9	↓-0.7
2/20 07:50	106.1	↓-0.8
2/20 08:00	105.0	↓-1.1
2/20 08:10	103.7	↓-1.3
2/20 08:20	102.1	↓-1.6
2/20 08:30	100.4	↓-1.7
2/20 08:40	98.4	↓-2.0
2/20 08:50	96.3	↓-2.1
2/20 09:00	94.0	↓-2.3
2/20 09:10	91.6	↓-2.4
2/20 09:20	89.0	↓-2.6
2/20 09:30	86.3	↓-2.7
2/20 09:40	83.5	↓-2.8
2/20 09:50	80.6	↓-2.9
2/20 10:00	77.7	↓-2.9
2/20 10:10	74.7	↓-3.0	最大潮位差
2/20 10:20	71.7	↓-3.0	最大潮位差
2/20 10:30	68.8	↓-2.9
2/20 10:40	65.8	↓-3.0	最大潮位差
2/20 10:50	62.9	↓-2.9
2/20 11:00	60.1	↓-2.8
2/20 11:10	57.3	↓-2.8
2/20 11:20	54.7	↓-2.6
2/20 11:30	52.2	↓-2.5
2/20 11:40	49.9	↓-2.3
2/20 11:50	47.7	↓-2.2
2/20 12:00	45.7	↓-2.0
2/20 12:10	43.9	↓-1.8
2/20 12:20	42.2	↓-1.7
2/20 12:30	40.8	↓-1.4
2/20 12:40	39.6	↓-1.2
2/20 12:50	38.6	↓-1.0
2/20 13:00	37.8	↓-0.8
2/20 13:10	37.3	↓-0.5
2/20 13:20	36.9	↓-0.4
2/20 13:30	36.8	↓-0.1	干潮
2/20 13:40	36.9	↑0.1
2/20 13:50	37.2	↑0.3
2/20 14:00	37.7	↑0.5
2/20 14:10	38.4	↑0.7
2/20 14:20	39.3	↑0.9
2/20 14:30	40.3	↑1.0
2/20 14:40	41.5	↑1.2
2/20 14:50	42.9	↑1.4
2/20 15:00	44.4	↑1.5
2/20 15:10	46.0	↑1.6
2/20 15:20	47.8	↑1.8
2/20 15:30	49.6	↑1.8
2/20 15:40	51.5	↑1.9
2/20 15:50	53.5	↑2.0
2/20 16:00	55.6	↑2.1
2/20 16:10	57.7	↑2.1
2/20 16:20	59.9	↑2.2
2/20 16:30	62.1	↑2.2
2/20 16:40	64.3	↑2.2
2/20 16:50	66.4	↑2.1
2/20 17:00	68.6	↑2.2
2/20 17:10	70.7	↑2.1
2/20 17:20	72.8	↑2.1
2/20 17:30	74.8	↑2.0
2/20 17:40	76.8	↑2.0
2/20 17:50	78.7	↑1.9
2/20 18:00	80.4	↑1.7
2/20 18:10	82.1	↑1.7
2/20 18:20	83.7	↑1.6
2/20 18:30	85.1	↑1.4
2/20 18:40	86.4	↑1.3
2/20 18:50	87.5	↑1.1
2/20 19:00	88.5	↑1.0
2/20 19:10	89.3	↑0.8
2/20 19:20	90.0	↑0.7
2/20 19:30	90.5	↑0.5
2/20 19:40	90.8	↑0.3
2/20 19:50	90.9	↑0.1	満潮
2/20 20:00	90.8	↓-0.1
2/20 20:10	90.6	↓-0.2
2/20 20:20	90.1	↓-0.5
2/20 20:30	89.5	↓-0.6
2/20 20:40	88.7	↓-0.8
2/20 20:50	87.8	↓-0.9
2/20 21:00	86.6	↓-1.2
2/20 21:10	85.4	↓-1.2
2/20 21:20	84.0	↓-1.4
2/20 21:30	82.5	↓-1.5
2/20 21:40	80.8	↓-1.7
2/20 21:50	79.1	↓-1.7
2/20 22:00	77.3	↓-1.8
2/20 22:10	75.5	↓-1.8
2/20 22:20	73.6	↓-1.9
2/20 22:30	71.7	↓-1.9
2/20 22:40	69.8	↓-1.9
2/20 22:50	67.9	↓-1.9
2/20 23:00	66.1	↓-1.8
2/20 23:10	64.3	↓-1.8
2/20 23:20	62.6	↓-1.7
2/20 23:30	60.9	↓-1.7
2/20 23:40	59.4	↓-1.5
2/20 23:50	58.0	↓-1.4