condition	mean	min	max
4 h after light	15.479248	15.440106	15.51839
8 h after light	13.4457155	13.429506	13.461925
12 h after light	16.3843495	14.46095	18.307749
4 h after dark	14.4016275	13.067798	15.735457
8 h after dark	16.271435	15.51839	17.02448
12 h after dark	18.274262	18.274262	18.274262