condition mean min max 0 h after light 0.527758 0.263526 0.79199 4 h after light 0.817526 0.714512 0.92054 8 h after light 0.6822305 0.469444 0.895017 4 h after dark 0.6481915 0.584638 0.711745 8 h after dark 0.5936035 0.355659 0.831548 12 h after dark 0.439724 0.286778 0.59267