condition	mean	min	max
4 h after light	6.12334	5.946969999999999	6.31896
8 h after light	6.35155	5.98375	6.65654
12 h after light	5.87974	5.7782800000000005	6.01886
4 h after dark	6.20775	5.98051	6.65035
8 h after dark	6.16328	5.83657	6.49075
12 h after dark	5.90538	5.789680000000001	5.97196