Fig. 6
From: A pilot study of solvent-based cleaning of yellow ochre oil paint: effect on mechanical properties
Reduced storage modulus versus loss tangent of control sample at the depths of 1, 2 and 3 μm, where each marker shows the results of an individual test at either depth with correspondingly coloured error bars indicating the 95% confidence intervals at that depth (assuming a normal distribution). The dashed line is a logarithmic function fitted to the averaged results at the three depths