condition	mean	min	max
4 h after light	8.46735	8.30927	8.62543
8 h after light	14.70815	13.4643	15.952
12 h after light	20.293950000000002	19.4634	21.1245
4 h after dark	19.28715	14.693	23.8813
8 h after dark	20.93665	20.2097	21.6636
12 h after dark	12.53595	12.308	12.7639