condition mean min max 4 h after light 0.4340345 0.332286 0.535783 8 h after light 0.399322 0.302871 0.495773 12 h after light 0.84043 0.817759 0.863101 4 h after dark 0.8866155 0.862162 0.911069 8 h after dark 1.12907 1.11614 1.142 12 h after dark 0.9056575 0.886157 0.925158