condition	mean	min	max
4 h after light	7.50951	7.26213	7.63825
8 h after light	7.387846666666667	7.30721	7.479360000000001
12 h after light	7.613013333333333	7.314	7.84369
4 h after dark	7.454336666666667	7.225060000000001	7.70005
8 h after dark	7.519653333333333	7.20763	7.888330000000001
12 h after dark	7.45053	7.173369999999999	7.6102300000000005