condition	mean	min	max
4 h after light	16.9836	15.4321	18.5351
8 h after light	20.75555	20.5559	20.9552
12 h after light	39.917100000000005	38.9519	40.8823
4 h after dark	36.20835	34.8188	37.5979
8 h after dark	38.6687	36.7624	40.575
12 h after dark	27.28325	26.674	27.8925