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Table 2 Environmental variables used to produce niche-based distribution models.

From: Pleistocene glacial refugia across the Appalachian Mountains and coastal plain in the millipede genus Narceus: Evidence from population genetic, phylogeographic, and paleoclimatic data

Environmental variables
Annual mean temperature
Temperature seasonality (standard deviation *100)
Mean temperature of wettest quarter
Mean temperature of driest quarter
Mean temperature of warmest quarter
Mean temperature of coldest quarter
Annual precipitation
Precipitation seasonality (Coefficient of variation)
Precipitation of wettest quarter
Precipitation of driest quarter