condition	mean	min	max
4 h after light	510.9	510.9	510.9
8 h after light	446.85	370.8	522.9
12 h after light	557.95	530.3	585.6
4 h after dark	445.75	297.2	594.3
8 h after dark	258.75	246.7	270.8
12 h after dark	180.1	172.0	188.2