condition	mean	min	max
4 h after light	6.77801	6.71605	6.891369999999999
8 h after light	6.73421	6.50451	6.88815
12 h after light	6.680913333333333	6.51772	6.801589999999999
4 h after dark	6.69611	6.5031300000000005	6.9877199999999995
8 h after dark	6.590136666666667	6.47674	6.71745
12 h after dark	6.614953333333333	6.5387900000000005	6.7495199999999995