condition mean min max 0 h after light 5.316065 5.17502 5.45711 4 h after light 3.480045 3.46905 3.49104 8 h after light 2.3909399999999996 2.35667 2.42521 4 h after dark 9.450325 8.29255 10.6081 8 h after dark 9.560755 9.06211 10.0594 12 h after dark 6.65803 6.65197 6.66409