condition	mean	min	max
4 h after light	7.01731	6.40949	8.06287
8 h after light	7.731843333333333	6.95592	8.27074
12 h after light	7.9236466666666665	7.322489999999999	8.40977
4 h after dark	8.146883333333335	7.877860000000001	8.298210000000001
8 h after dark	8.41488	8.11765	8.56413
12 h after dark	8.634269999999999	8.31942	8.85159