condition	mean	min	max
4 h after light	8.877452000000002	8.39492	9.359984
8 h after light	8.7486905	8.457776	9.039605
12 h after light	8.5316455	8.145921	8.91737
4 h after dark	8.732762000000001	8.573861	8.891663
8 h after dark	8.357715	8.141569	8.573861
12 h after dark	8.573861	8.573861	8.573861