condition	mean	min	max
4 h after light	20.613846000000002	19.084893	22.142799
8 h after light	18.014592	17.078547	18.950637
12 h after light	18.8915675	18.698242	19.084893
4 h after dark	17.996049499999998	15.993548	19.998551
8 h after dark	21.8118495	21.271657	22.352042
12 h after dark	20.272973	20.272973	20.272973