The initial set of environmental variables and their range of values across all 10 km×10 km grid cells in continental Spain.

The variables used in the distribution modeling for Galemys pyrenaicus are bold-faced.
aDifference between maximum and minimum altitude.
bStandard deviation of values.
cAverage of monthly mean daily temperatures.
dMonthly mean temperature of the coldest month.
eMean for June, July and August.
fMean for December, January and February.
gMaximum for June, July and August.
hSum of monthly mean precipitation over the year.
iMinimum monthly value.
jStandard deviation of mean monthly values.
kYearly sum of the monthly differences between precipitation and potential evapotranspiration, following [68].
lFollowing [77].
mDifference between maximum and minimum monthly value.
n[46].
o[47].