condition	mean	min	max
4 h after light	665.9	665.9	665.9
8 h after light	664.75	657.7	671.8
12 h after light	551.5	549.0	554.0
4 h after dark	645.85	547.1	744.6
8 h after dark	692.0	617.0	767.0
12 h after dark	653.4	632.4	674.4