condition	mean	min	max
4 h after light	8.301516666666666	8.15139	8.53537
8 h after light	7.40569	7.15377	7.599130000000001
12 h after light	7.7131099999999995	7.61579	7.76392
4 h after dark	8.19392	8.0217	8.36589
8 h after dark	8.712873333333334	8.649560000000001	8.823030000000001
12 h after dark	9.505303333333334	9.40893	9.6018