condition mean min max 0 h after light 0.729482 0.713884 0.74508 4 h after light 0.66579 0.626033 0.705547 8 h after light 1.160695 1.10345 1.21794 4 h after dark 1.36754 1.33216 1.40292 8 h after dark 1.1985999999999999 1.02773 1.36947 12 h after dark 0.830766 0.678167 0.983365