condition	mean	min	max
4 h after light	4.189346666666666	4.16516	4.236269999999999
8 h after light	4.28239	4.09322	4.47295
12 h after light	4.19559	4.09998	4.2844
4 h after dark	4.211686666666667	4.13696	4.3085
8 h after dark	4.038679999999999	3.84144	4.14424
12 h after dark	4.135243333333333	4.06727	4.18572