condition	mean	min	max
4 h after light	19.6854525	18.6877	20.683205
8 h after light	20.941387499999998	20.414742	21.468033
12 h after light	21.1638385	20.106957	22.22072
4 h after dark	22.987485	21.903782	24.071188
8 h after dark	27.092421	21.270921	32.913921
12 h after dark	19.092861	19.092861	19.092861