condition	mean	min	max
4 h after light	5.9438233333333335	5.8661	6.0153099999999995
8 h after light	5.929796666666667	5.757000000000001	6.02238
12 h after light	5.824366666666667	5.67208	5.92952
4 h after dark	5.8121599999999995	5.69928	5.89013
8 h after dark	5.997393333333333	5.92589	6.136
12 h after dark	6.00905	5.82501	6.30232