condition	mean	min	max
4 h after light	18.7813655	18.526833	19.035898
8 h after light	18.5567285	18.121132	18.992325
12 h after light	20.0860815	19.02973	21.142433
4 h after dark	16.078317000000002	14.515109	17.641525
8 h after dark	18.1630495	18.065794	18.260305
12 h after dark	24.622907	24.622907	24.622907