condition	mean	min	max
4 h after light	6.5089266666666665	6.19449	6.86407
8 h after light	6.318753333333333	6.05895	6.665439999999999
12 h after light	6.278803333333333	6.01892	6.70459
4 h after dark	6.310020000000001	6.050680000000001	6.627000000000001
8 h after dark	6.275063333333333	5.957319999999999	6.49709
12 h after dark	6.35211	6.15669	6.7286399999999995