condition	mean	min	max
4 h after light	7.392553333333333	7.18982	7.592969999999999
8 h after light	7.38759	7.20154	7.51255
12 h after light	7.219973333333333	7.1067100000000005	7.29939
4 h after dark	7.387453333333333	7.10464	7.6132800000000005
8 h after dark	7.28568	7.20564	7.33122
12 h after dark	7.08866	7.00057	7.150289999999999