condition	mean	min	max
4 h after light	7.52487	7.1954	7.85434
8 h after light	5.933995	5.84963	6.01836
12 h after light	8.12914	8.05543	8.20285
4 h after dark	11.923766666666667	11.808	12.0998
8 h after dark	11.1159	10.8544	11.2976
12 h after dark	9.009123333333333	8.20746	9.42242