condition	mean	min	max
4 h after light	13.428049999999999	13.1081	13.748
8 h after light	10.63035	10.4542	10.8065
12 h after light	12.55835	12.3995	12.7172
4 h after dark	17.95525	17.5588	18.3517
8 h after dark	19.3174	18.9392	19.6956
12 h after dark	19.22345	19.002	19.4449