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We extend our previous study [Phys. Lett. B643 (2006) 46] of the cross-overtemperatures (T_c) of QCD. We improve our zero temperature analysis by usingphysical quark masses and finer lattices. In addition to the kaon decayconstant used for scale setting we determine four quantities (masses of the\Omega baryon, K^*(892) and \phi(1020) mesons and the pion decay constant)which are found to agree with experiment. This implies that --independently ofwhich of these quantities is used to set the overall scale-- the same resultsare obtained within a few percent. At finite temperature we use finer latticesdown to a <= 0.1 fm (N_t=12 and N_t=16 at one point). Our new results confirmcompletely our previous findings. We compare the results with those of the'hotQCD' collaboration.

The QCD transition temperature: results with physical masses in the continuum limit II.