condition mean min max 4 h after light 10.9836425 10.010039 11.957246 8 h after light 8.893195 7.829952 9.956438 12 h after light 9.765153999999999 9.650615 9.879693 4 h after dark 8.721259 8.547743 8.894775 8 h after dark 11.7499045 11.570794 11.929015 12 h after dark 10.026975 10.026975 10.026975