condition	mean	min	max
0 h after light	7.889429999999999	7.5112	8.26766
4 h after light	7.5585	7.29343	7.82357
8 h after light	6.422105	5.74002	7.10419
4 h after dark	7.715365	7.15556	8.27517
8 h after dark	6.58319	6.49206	6.67432
12 h after dark	7.30456	6.46697	8.14215