condition	mean	min	max
4 h after light	1158.9	1158.9	1158.9
8 h after light	1325.75	1239.1	1412.4
12 h after light	1179.7	1126.0	1233.4
4 h after dark	959.5	919.9	999.1
8 h after dark	701.45	631.0	771.9
12 h after dark	665.55	619.2	711.9