condition	mean	min	max
4 h after light	9.128583333333333	8.82343	9.31884
8 h after light	9.2309	8.98917	9.385869999999999
12 h after light	9.343806666666667	9.09079	9.48485
4 h after dark	9.71489	9.60163	9.7844
8 h after dark	9.612093333333334	9.54597	9.73236
12 h after dark	9.38616	9.10839	9.60853