condition	mean	min	max
4 h after light	7.748175	6.28929	9.20706
8 h after light	7.7404150000000005	6.84811	8.63272
12 h after light	12.8629	12.4791	13.2467
4 h after dark	16.3166	15.0296	17.6036
8 h after dark	15.1827	14.8962	15.4692
12 h after dark	13.0129	12.8933	13.1325