condition	mean	min	max
4 h after light	8.721613333333334	8.65905	8.7685
8 h after light	8.348696666666665	8.25705	8.405569999999999
12 h after light	8.39921	8.2569	8.49738
4 h after dark	8.794889999999999	8.56125	9.08188
8 h after dark	8.90624	8.64648	9.13153
12 h after dark	9.307463333333333	9.18705	9.41037