condition	mean	min	max
4 h after light	3.176535	2.54071	3.81236
8 h after light	2.301765	1.97577	2.62776
12 h after light	2.237155	2.16585	2.30846
4 h after dark	2.652075	2.60826	2.69589
8 h after dark	3.560965	3.37335	3.74858
12 h after dark	3.931635	3.63866	4.22461