condition	mean	min	max
4 h after light	8.229276666666665	8.017489999999999	8.41297
8 h after light	8.424570000000001	8.24151	8.6377
12 h after light	8.31681	8.28585	8.37522
4 h after dark	8.24656	8.14387	8.3728
8 h after dark	8.11689	7.81957	8.2877
12 h after dark	7.662446666666667	7.559130000000001	7.737660000000001