condition	mean	min	max
4 h after light	14.4169745	11.73453	17.099419
8 h after light	18.1332865	17.530809	18.735764
12 h after light	20.1186655	17.400449	22.836882
4 h after dark	17.6179565	15.412154	19.823759
8 h after dark	15.0592635	14.519278	15.599249
12 h after dark	11.591368	11.591368	11.591368