condition	mean	min	max
4 h after light	6.157475	5.21046	7.10449
8 h after light	5.684559999999999	5.36281	6.00631
12 h after light	4.344475	4.25702	4.43193
4 h after dark	10.167075	8.81605	11.5181
8 h after dark	8.06542	7.69654	8.4343
12 h after dark	8.722385	8.56715	8.87762