condition	mean	min	max
4 h after light	16.6775	14.5678	18.7872
8 h after light	10.2697	9.9784	10.561
12 h after light	7.215955	7.10574	7.32617
4 h after dark	15.713666666666667	15.5411	15.8773
8 h after dark	20.7722	18.5199	22.475
12 h after dark	19.2729	17.826	20.8342