condition	mean	min	max
4 h after light	6.08008	5.945	6.26492
8 h after light	6.078403333333333	5.9160699999999995	6.38398
12 h after light	6.04374	5.91405	6.2830699999999995
4 h after dark	6.051033333333334	5.77025	6.40266
8 h after dark	5.963453333333334	5.7445900000000005	6.10478
12 h after dark	5.964283333333333	5.80595	6.266430000000001