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. 2009 Feb 19;10:7. doi: 10.1186/1471-2156-10-7

Table 3.

Environmental variables considered in SAM analysis

Variable Description
Altitude DEM SRTM30, NASA
DTR Diurnal Temperature Range in °C
FRS Number of days with ground frost
PR Precipitation in mm/month
PRCV Coefficient of variation of monthly precipitation in %
REH Relative humidity (%)
SUN Percent of maximum possible sunshine (percent of daylength)
TMP Mean temperature in °C
RDO Number of days with > 0.1 mm rain per month
WIND Windspeed in m/s 10 meters above the ground

List of environmental variables considered in SAM analysis. Yearly means and monthly values were used for these climatic variables (a total of 118 environmental parameters).