condition	mean	min	max
4 h after light	18.3191045	18.249368	18.388841
8 h after light	18.5566855	17.191807	19.921564
12 h after light	18.511419500000002	17.478313	19.544526
4 h after dark	15.104474	14.866977	15.341971
8 h after dark	19.135026500000002	18.249368	20.020685
12 h after dark	16.576887	16.576887	16.576887