condition	mean	min	max
4 h after light	18.8143575	18.556413	19.072302
8 h after light	18.3624625	17.463583	19.261342
12 h after light	17.8022235	17.616477	17.98797
4 h after dark	17.801233500000002	17.046054	18.556413
8 h after dark	19.462921	19.324872	19.60097
12 h after dark	20.709672	20.709672	20.709672