condition	mean	min	max
4 h after light	5.938593333333333	5.865419999999999	6.00925
8 h after light	5.864073333333334	5.75284	6.03644
12 h after light	5.893963333333333	5.72063	6.06847
4 h after dark	6.05243	5.88929	6.29601
8 h after dark	6.02442	5.88879	6.22276
12 h after dark	6.034883333333333	5.95747	6.1090800000000005