condition	mean	min	max
4 h after light	547.6	547.6	547.6
8 h after light	453.6	453.5	453.7
12 h after light	501.65	406.0	597.3
4 h after dark	614.3	528.2	700.4
8 h after dark	615.8	610.8	620.8
12 h after dark	604.95	585.3	624.6