condition	mean	min	max
4 h after light	7.370795	6.10652	8.63507
8 h after light	7.396685	7.22624	7.56713
12 h after light	7.53575	7.17415	7.89735
4 h after dark	9.205903333333334	9.12244	9.27487
8 h after dark	8.349779999999999	7.79617	8.88219
12 h after dark	7.34024	7.02227	7.55027