Fig. 7.
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Probability density functions and their correlations obtained by MCMC for coefficients a1, a2, a3, and a4 for the Sun at maximum activity (1999–2002, left) and at minimum activity (2006–2009, right). The red curve is the expected 
coefficient for a pure centrifugal distortion. The light and dark grey PDF areas show the 1σ and 2σ confidence intervals, respectively.
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