condition	mean	min	max
4 h after light	5.263	5.149859999999999	5.38411
8 h after light	5.330156666666666	5.23475	5.49357
12 h after light	5.310956666666667	5.0509	5.6094800000000005
4 h after dark	5.245253333333333	5.1715800000000005	5.28714
8 h after dark	5.283623333333334	5.12255	5.46471
12 h after dark	5.32008	5.15428	5.42794