condition	mean	min	max
4 h after light	18.038800000000002	17.5249	18.5527
8 h after light	18.80525	17.7065	19.904
12 h after light	17.54955	15.1334	19.9657
4 h after dark	21.9521	21.014	22.8902
8 h after dark	19.66305	19.6482	19.6779
12 h after dark	20.0303	19.8448	20.2158