condition	mean	min	max
4 h after light	9.018453333333333	8.96765	9.05943
8 h after light	9.144656666666666	9.09803	9.217
12 h after light	9.011383333333333	8.95485	9.11968
4 h after dark	9.08698	9.01309	9.14179
8 h after dark	8.96515	8.87186	9.1359
12 h after dark	9.10294	8.96389	9.24865