condition	mean	min	max
4 h after light	1965.3	1965.3	1965.3
8 h after light	1749.5	1657.7	1841.3
12 h after light	1534.6	1197.4	1871.8
4 h after dark	1254.45	1192.0	1316.9
8 h after dark	1227.25	831.9	1622.6
12 h after dark	929.05	919.9	938.2