condition	mean	min	max
0 h after light	9.63592	9.41398	9.85786
4 h after light	18.79785	18.2578	19.3379
8 h after light	17.57365	16.9535	18.1938
4 h after dark	10.609395	9.59119	11.6276
8 h after dark	10.38635	10.1566	10.6161
12 h after dark	9.486335	7.45247	11.5202