condition	mean	min	max
4 h after light	3.9225100000000004	3.8892300000000004	3.96372
8 h after light	3.9565433333333333	3.87143	4.09504
12 h after light	3.9366233333333334	3.8999800000000002	4.00866
4 h after dark	3.98989	3.88502	4.14692
8 h after dark	3.92616	3.85945	3.9670900000000002
12 h after dark	3.982423333333333	3.91551	4.0699