condition	mean	min	max
4 h after light	6.937206666666667	6.866460000000001	6.99193
8 h after light	7.08788	6.9840100000000005	7.25299
12 h after light	6.803523333333334	6.55998	6.97417
4 h after dark	6.60185	6.3675	6.93478
8 h after dark	6.56505	6.3448400000000005	6.9077
12 h after dark	6.507813333333334	6.39533	6.6898800000000005