condition	mean	min	max
4 h after light	8.754673333333333	8.54688	8.87525
8 h after light	8.397176666666667	7.9062	8.782910000000001
12 h after light	8.485	8.18427	8.810939999999999
4 h after dark	8.50113	8.06662	8.89016
8 h after dark	8.420976666666666	7.7201	8.92323
12 h after dark	8.57356	8.128630000000001	8.93565