condition	mean	min	max
4 h after light	6.74834	6.55475	6.936030000000001
8 h after light	6.34483	6.06668	6.614560000000001
12 h after light	6.505093333333334	6.28533	6.73942
4 h after dark	6.3599	6.24869	6.50063
8 h after dark	6.55273	6.37046	6.84565
12 h after dark	6.538853333333333	6.17279	6.83949