condition	mean	min	max
4 h after light	5.709265	4.19922	7.21931
8 h after light	9.50299	8.47108	10.5349
12 h after light	6.145535	4.90117	7.3899
4 h after dark	5.6337	5.02358	6.24382
8 h after dark	3.16865	3.12895	3.20835
12 h after dark	2.940325	2.12445	3.7562