condition	mean	min	max
4 h after light	20.1334	19.6518	20.615
8 h after light	15.773150000000001	15.0348	16.5115
12 h after light	13.3019	12.6986	13.9052
4 h after dark	11.98675	11.3674	12.6061
8 h after dark	12.7339	12.4517	13.0161
12 h after dark	14.92025	14.7133	15.1272