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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