condition	mean	min	max
4 h after light	15.628050000000002	13.7566	17.4995
8 h after light	14.451550000000001	13.9756	14.9275
12 h after light	16.47605	15.8314	17.1207
4 h after dark	18.363233333333334	16.5259	20.5267
8 h after dark	20.335166666666666	18.1326	21.8069
12 h after dark	18.767266666666664	16.3982	21.8572