condition	mean	min	max
0 h after light	3.863995	3.86055	3.86744
4 h after light	8.65966	5.90042	11.4189
8 h after light	3.84702	1.9649	5.72914
4 h after dark	18.0398	15.2261	20.8535
8 h after dark	8.61093	3.80216	13.4197
12 h after dark	9.55444	7.54278	11.5661