condition	mean	min	max
4 h after light	5.8986350000000005	5.26076	6.53651
8 h after light	8.050485	7.82612	8.27485
12 h after light	16.94005	16.8166	17.0635
4 h after dark	17.22905	15.7394	18.7187
8 h after dark	12.65805	12.0246	13.2915
12 h after dark	10.6954	10.5366	10.8542