condition mean min max 4 h after light 16.6857855 15.817606 17.553965 8 h after light 14.351583999999999 13.746992 14.956176 12 h after light 14.372002 13.983193 14.760811 4 h after dark 14.674254000000001 14.61292 14.735588 8 h after dark 15.407782 14.956176 15.859388 12 h after dark 18.719228 18.719228 18.719228