condition	mean	min	max
4 h after light	11.924299999999999	11.2964	12.5522
8 h after light	9.08707	8.75076	9.42338
12 h after light	15.908050000000001	14.9906	16.8255
4 h after dark	20.45825	19.8188	21.0977
8 h after dark	20.75475	19.6263	21.8832
12 h after dark	18.59255	18.4657	18.7194