condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.054912 0.0 0.109824 8 h after light 0.0183672 0.0 0.0367344 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0