Fig. 6

Mean and standard deviation in hourly temperature (black line) and relative humidity (grey line) (a) and Culicoides imicola numbers (black line) (b) as determined with 96 light trap collections at four sites near cattle at the ARC-OVR from 15:00 h on 1 November to 14:00 h on 2 November 2017. The C. imicola numbers collected at the four individual sites are indicated with grey lines. Vertical black lines indicate sunset and sunrise