condition	mean	min	max
4 h after light	7.932906666666667	7.781160000000001	8.18789
8 h after light	7.88617	7.70365	8.20345
12 h after light	7.76274	7.57522	7.90792
4 h after dark	7.605736666666667	7.31575	8.035210000000001
8 h after dark	7.810650000000001	7.60243	8.093760000000001
12 h after dark	7.80806	7.4325399999999995	8.24891