Table 4. Clustering of P. halepensis oils samples by statistical analysis.

Components	Group I (S2-S6, S10)			Group II (S1-S7-9)
	Rangeb	Averageb		Rangeb	Averageb
Monoterpene hydrocarbons	54.39			54.55
α-Pinene	12.2-14.4	13.4		18.0-24.5	21.8
Sabinene	3.5-6.3	5.52		1.5-3.0	2.20
Myrcene	15.2-28.5	23.94		24.1-32.0	27.15
Terpinolene	9.4-13.8	11.53		1.8-5.8	3.42
Oxygenated monoterpenes	5.78			1.85
Terpinene-4-ol	3.9-8.2	5.78		1.0-2.5	1.85
Monoterpene sesquiterpenes	8.78
E-β-Caryophyllene	7.0-11.1	8.78		11.0-17.1	14.15
Non-terpenic compounds	10.1			5.76
2-Phenylethyl isovanerate	8.7-10.9	10.1		4.8-7.0	5.76

^b Normalized % abundances.