condition	mean	min	max
4 h after light	4.186566666666667	4.1127199999999995	4.2913
8 h after light	4.06226	3.93263	4.16397
12 h after light	4.248173333333333	4.11156	4.35286
4 h after dark	4.25185	4.1733199999999995	4.30848
8 h after dark	4.24569	4.13323	4.44684
12 h after dark	4.13717	3.9908	4.21086