condition	mean	min	max
4 h after light	8.36134	8.32345	8.41146
8 h after light	8.340346666666667	8.21968	8.459539999999999
12 h after light	8.33933	8.288269999999999	8.43317
4 h after dark	8.568546666666666	8.51728	8.64616
8 h after dark	8.825846666666667	8.743360000000001	8.945960000000001
12 h after dark	9.00456	8.86253	9.23507