Tyrrhenian Upper Waters in the Ustica Island (Marine Protected Area, Sicily, Italy)

Table 1

Mean values (𝝁), standard deviation (𝝈), and number of samples (𝐧) for all examinated parameters.

		Autumn 2001	Winter 2002	Spring 2002	Summer 2002	Autumn 2002	Winter 2003
Temperature (^∘C)	𝜇	20.46	15.01	18.06	24.72	20.40	15.76
	𝜎	4.09	0.38	2.13	3.32	3.52	0.98
	𝑛	42	36	30	30	48	42
Salinity (PSU)	𝜇	37.81	37.62	37.74	37.76	37.94	37.88
	𝜎	0.35	0.26	0.17	0.11	0.08	0.28
	𝑛	42	36	30	30	48	42
Dissolved oxygen (mlL^−1)	𝜇	5.51	5.70	5.77	5.73	5.56	6.08
	𝜎	0.26	0.13	0.22	0.39	0.31	0.35
	𝑛	37	36	30	29	47	40
Nitrate (𝜇M)	𝜇	1.96	2.00	0.84	1.50	2.35	3.68
	𝜎	2.68	1.54	1.25	1.40	2.17	4.24
	𝑛	14	12	10	10	16	14
Phosphate (𝜇M)	𝜇	0.25	0.31	0.24	0.20	0.16	0.44
	𝜎	0.17	0.17	0.19	0.12	0.08	0.42
	𝑛	14	12	10	10	16	14
Silicate (𝜇M)	𝜇	10.77	12.42	9.46	7.11	6.18	6.86
	𝜎	8.90	8.61	5.36	3.51	4.26	5.22
	𝑛	14	12	10	10	16	15
Chlorophyll 𝑎 (mg/mc)	𝜇	3.97	5.88	1.08	0.99	1.93	5.80
	𝜎	2.66	3.17	0.96	0.47	2.92	3.70
	𝑛	37	36	30	29	41	29