Optimization of GC-MS Method for Analysis of Basil Essential Oils from Algeria: Design of Experiments and Exploratory Pattern Recognition

Table 1

Geographical data of four study regions.

	Ouargla (O)	Mostaganem (M)	Alger (A)	Constantine (C)
Latitude	31°97′	35°94′	36°58′	36°36′
Longitude	5°34′	0°09′	2°90′	6°60′
Altitude (m)	128	55	270	944