condition	mean	min	max
4 h after light	22.60885	20.4406	24.7771
8 h after light	16.04345	15.2986	16.7883
12 h after light	13.9143	13.0083	14.8203
4 h after dark	17.874850000000002	17.1635	18.5862
8 h after dark	18.4478	18.0068	18.8888
12 h after dark	20.603949999999998	20.2532	20.9547