hi cosmo-torun, A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty Michael J. Mortonson, Uroš Seljak http://arxiv.org/abs/1405.5857 "... The resulting joint BICEP2+Planck analysis favors solutions without gravity waves, and the upper limit on the tensor-to-scalar ratio is $r<0.11$, a slight improvement relative to the Planck analysis alone which gives $r<0.13$ ($95\%$ c.l.). The estimated amplitude of the dust polarization power spectrum is in rough agreement with expectations for this field based on HI column density. ..." Popular science description: https://www.sciencemag.org/content/344/6186/790.full pozdr Boud