condition	mean	min	max
4 h after light	8.90739	8.7803	9.14012
8 h after light	8.99551	8.86823	9.18806
12 h after light	9.143163333333332	9.03181	9.230889999999999
4 h after dark	9.08645	8.9694	9.19122
8 h after dark	9.144723333333333	8.98427	9.28087
12 h after dark	9.003086666666666	8.92958	9.08806