condition	mean	min	max
4 h after light	8.086793333333333	7.790769999999999	8.38008
8 h after light	8.16171	7.9355899999999995	8.29715
12 h after light	8.28524	8.11848	8.38667
4 h after dark	8.095	7.8986600000000005	8.22803
8 h after dark	7.885923333333333	7.779	7.947310000000001
12 h after dark	8.021606666666667	7.93095	8.11678