condition	mean	min	max
4 h after light	17.824872499999998	16.2095	19.440245
8 h after light	14.7119195	13.457706	15.966133
12 h after light	15.512346999999998	15.024353	16.000341
4 h after dark	14.124924	14.082116	14.167732
8 h after dark	17.7571655	16.000341	19.51399
12 h after dark	18.377256	18.377256	18.377256