condition	mean	min	max
4 h after light	615.0	615.0	615.0
8 h after light	601.6	569.2	634.0
12 h after light	648.6	623.1	674.1
4 h after dark	543.05	538.9	547.2
8 h after dark	626.15	507.8	744.5
12 h after dark	555.2	521.4	589.0