condition	mean	min	max
4 h after light	8.2837	7.9938899999999995	8.42865
8 h after light	8.088196666666667	7.68998	8.39458
12 h after light	8.3787	8.18926	8.51568
4 h after dark	7.91929	7.477460000000001	8.18097
8 h after dark	7.962063333333333	7.63492	8.14085
12 h after dark	8.018493333333334	7.6169	8.24405