condition	mean	min	max
4 h after light	16.64055	16.2555	17.0256
8 h after light	12.1478	11.8571	12.4385
12 h after light	11.5281	11.2606	11.7956
4 h after dark	15.3424	14.9963	15.6885
8 h after dark	19.586599999999997	18.3894	20.7838
12 h after dark	19.09885	18.3422	19.8555