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 0.0244189 0.0 0.0488378 4 h after dark 0.022979 0.0 0.068937 8 h after dark 0.054524666666666666 0.0 0.163574 12 h after dark 0.0 0.0 0.0