condition	mean	min	max
4 h after light	17.38775	14.937743	19.837757
8 h after light	15.293672	13.844453	16.742891
12 h after light	13.266259	12.688065	13.844453
4 h after dark	15.7124125	14.986481	16.438344
8 h after dark	13.475732	13.107011	13.844453
12 h after dark	12.754283	12.754283	12.754283