This paper presents the analysis of leptonic and semileptonic kaon decays data done by the FlaviaNet Kaon Working group, as described in [Precision test of the Standard Model with leptonic and semileptonic kaon decays arXiv:0801.1817[hep-ph] 11 Jan 2008]. Data include all recent results by BNL-E865, KLOE, KTeV, ISTRA+, and NA48. Experimental results are critically reviewed and combined, taking into account theoretical (both analytical and numerical) constraints on the semileptonic kaon form factors. We report on a very accurate determination of Vus as well as on many other tests of the SM which can be performed with leptonic and semileptonic K decays.