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. 2019 Nov;34(6):514–520. doi: 10.5001/omj.2019.94

Table 1. Variables used for MaxEnt modeling of Culex pipiens distribution in Ardabil province, northwest of Iran.

Variables Description Contribution, %
Bio1 Annual mean temperature (oC) 0.0
Bio2 Mean diurnal range: mean of monthly (max temp–min temp) (oC) 0.0
Bio3 Isothermality: (Bio2/Bio7 × 100) 6.8
Bio4 Temperature seasonality (SD × 100) 0.0
Bio5 Maximum temperature of the warmest month (oC) 21.2
Bio6 Minimum temperature of the coldest month (oC) 0.0
Bio7 Temperature annual range (Bio5–Bio6) (oC) 3.2
Bio8 Mean temperature of wettest quarter (oC) 2.1
Bio9 Mean temperature of driest quarter (oC) 0.0
Bio10 Mean temperature of warmest quarter (oC) 0.0
Bio11 Mean temperature of coldest quarter (oC) 0.0
Bio12 Annual precipitation (mm) 0.1
Bio13 Precipitation of wettest month (mm) 1.7
Bio14 Precipitation of driest month (mm) 0.0
Bio15 Precipitation seasonality (coefficient of variation) 6.2
Bio16 Precipitation of wettest quarter (mm) 7.0
Bio17 Precipitation of driest quarter (mm) 0.0
Bio18 Precipitation of warmest quarter (mm) 0.0
Bio19 Precipitation of coldest quarter (mm) 21.9
Altitude Elevation from the sea level (Beiranvand R, #1) 3.6
Slope Slope of the area (%) 17.7
Aspect Direction of slope (degree) 6.9
NDVI -1 to +1 2.1

NDVI: normalized difference vegetation index.