condition	mean	min	max
4 h after light	15.464849999999998	15.2267	15.703
8 h after light	7.530535	7.40189	7.65918
12 h after light	5.875565	5.71707	6.03406
4 h after dark	6.06099	6.05584	6.06614
8 h after dark	6.297965	6.12823	6.4677
12 h after dark	11.58025	11.3802	11.7803