condition	mean	min	max
4 h after light	0.0	0.0	0.0
8 h after light	1.93634	0.0	3.87268
12 h after light	2.364885	0.0	4.72977
4 h after dark	18.7526	16.5362	20.969
8 h after dark	23.7697	12.3207	35.2187
12 h after dark	21.57355	12.2374	30.9097