condition	mean	min	max
0 h after light	16.45	15.9578	16.9422
4 h after light	20.892	18.6105	23.1735
8 h after light	18.07655	17.1261	19.027
4 h after dark	20.0727	18.7646	21.3808
8 h after dark	18.6268	17.6835	19.5701
12 h after dark	17.19495	16.5509	17.839