condition	mean	min	max
3 h after light	17.265733333333333	15.577	19.7582
6 h after light	24.0852	20.7845	25.9734
9 h after light	22.903166666666667	17.9312	29.2551
12 h after light	17.519025	14.956	20.0091
3 h after dark	18.121	17.552	18.6012
6 h after dark	18.5887	17.7123	20.0231
9 h after dark	14.700666666666667	13.284	16.326
12 h after dark	17.5274	17.5247	17.5301