condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 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 2 h after dark 0.2008065 0.0 0.401613 4 h after dark 0.0 0.0 0.0 8 h after dark 0.4305205 0.422782 0.438259 12 h after dark 0.0 0.0 0.0