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 0.02614675 0.0 0.0522935 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0227034 0.0 0.0454068 12 h after dark 0.0 0.0 0.0