condition mean min max 4 h after light 0.0181032 0.0 0.0362064 8 h after light 0.0147817 0.0 0.0295634 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0155697 0.0 0.0311394