condition	mean	min	max
4 h after light	12.99817	5.97604	20.0203
8 h after light	14.1205	14.107	14.134
12 h after light	18.4867	11.1215	25.8519
4 h after dark	12.0547	10.4226	13.6868
8 h after dark	9.45544	9.17167	9.73921
12 h after dark	9.79047	7.76274	11.8182