condition	mean	min	max
4 h after light	8.40671	8.363669999999999	8.479280000000001
8 h after light	8.34288	8.21275	8.500739999999999
12 h after light	8.053916666666666	7.878819999999999	8.19369
4 h after dark	8.162239999999999	7.997139999999999	8.44004
8 h after dark	8.201406666666667	7.998880000000001	8.32673
12 h after dark	8.090913333333333	7.85122	8.3372