condition	mean	min	max
4 h after light	7.971793333333333	7.952439999999999	7.99193
8 h after light	7.96239	7.83967	8.08902
12 h after light	8.124336666666668	7.98833	8.21467
4 h after dark	7.861723333333333	7.81272	7.957160000000001
8 h after dark	7.82329	7.54447	8.189810000000001
12 h after dark	7.8452	7.74578	7.93098