condition	mean	min	max
4 h after light	8.84991	8.74141	8.95748
8 h after light	8.545950000000001	8.417110000000001	8.782810000000001
12 h after light	8.508496666666668	8.28055	8.835460000000001
4 h after dark	8.927363333333334	8.78759	9.058
8 h after dark	8.863093333333333	8.701789999999999	9.00037
12 h after dark	9.123380000000001	9.06146	9.23292