condition	mean	min	max
4 h after light	12.4993	12.2935	12.7051
8 h after light	13.10175	11.7322	14.4713
12 h after light	13.96385	12.74	15.1877
4 h after dark	17.99165	17.8286	18.1547
8 h after dark	21.9326	20.8463	23.0189
12 h after dark	20.00905	19.8329	20.1852