Table 1. Average meteorological data of the populations under study (National Meteorological Administration, Romania, reference period 1994–2013).

Populations (Identification n°)	Altitude (m.a.s.l.)	Mean annual Temperature (°C)	Mean annual Precipitation (mm)	Mean potential ETP (mm)
1	840–1200	6.4	642.0	558.5
2	1200–1450	5.6	893.0	517.3
3	230	10.4	751.9	672.6
4	1250–1500	1.9	800.7	428.6
5	770	7.8	837.6	594.0
6	850–930	7.2	707.8	607.3
7	1350–1650	0.9	1303.2	360.4