condition	mean	min	max
4 h after light	20.195077	18.992249	21.397905
8 h after light	19.929347999999997	19.690281	20.168415
12 h after light	19.177961	15.185236	23.170686
4 h after dark	21.9589765	20.110682	23.807271
8 h after dark	21.586720999999997	17.278135	25.895307
12 h after dark	18.491852	18.491852	18.491852