condition	mean	min	max
4 h after light	17.378999999999998	15.9788	18.7792
8 h after light	16.4122	15.9241	16.9003
12 h after light	18.6722	16.7357	20.6087
4 h after dark	20.73365	20.4985	20.9688
8 h after dark	24.0262	23.6158	24.4366
12 h after dark	21.744950000000003	21.4525	22.0374