condition	mean	min	max
4 h after light	16.67975	15.6488	17.7107
8 h after light	15.04315	15.0082	15.0781
12 h after light	19.81575	19.2979	20.3336
4 h after dark	20.13035	18.5729	21.6878
8 h after dark	18.304850000000002	17.9921	18.6176
12 h after dark	19.2526	18.9527	19.5525