condition	mean	min	max
4 h after light	8.26212	7.90694	8.477310000000001
8 h after light	8.21742	7.86793	8.48338
12 h after light	8.2255	7.69729	8.50384
4 h after dark	8.405289999999999	8.06744	8.647219999999999
8 h after dark	8.431066666666666	8.09951	8.73973
12 h after dark	8.327403333333333	8.09298	8.53236