condition	mean	min	max
4 h after light	3.999995	3.82009	4.1799
8 h after light	3.645965	3.1033	4.18863
12 h after light	4.86783	4.62002	5.11564
4 h after dark	9.183105	7.04521	11.321
8 h after dark	5.72169	5.19802	6.24536
12 h after dark	4.060695	3.37935	4.74204