condition	mean	min	max
4 h after light	18.116462499999997	16.874322	19.358603
8 h after light	18.61567	18.61567	18.61567
12 h after light	21.6421075	20.824035	22.46018
4 h after dark	18.462434	18.462434	18.462434
8 h after dark	19.540188	17.39637	21.684006
12 h after dark	18.295674	18.295674	18.295674