condition	mean	min	max
4 h after light	17680.1	17680.1	17680.1
8 h after light	17433.6	16862.4	18004.8
12 h after light	16279.85	15987.8	16571.9
4 h after dark	11801.15	8346.4	15255.9
8 h after dark	9970.45	8595.7	11345.2
12 h after dark	12184.65	11194.9	13174.4