condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.10613210000000001 0.0468462 0.165418 12 h after dark 0.0820278 0.0465296 0.117526