condition	mean	min	max
4 h after light	7425.9	7425.9	7425.9
8 h after light	9443.25	7898.8	10987.7
12 h after light	10395.4	9846.5	10944.3
4 h after dark	12201.45	9985.5	14417.4
8 h after dark	12559.15	12265.3	12853.0
12 h after dark	11392.35	9569.0	13215.7