Planck 2015 results. XVI. Isotropy and statistics of the CMB

P.A.R Ade, N. Aghanim, Y. Akrami, P.K. Aluri, M. Arnaud, M. Ashdown, J. Aumont, C. Baccigalupi, A.J. Banday, R.B. Barreiro, N. Bartolo, Per Rex Christensen, Anne Mette Frejsel, Pavel Nasselski, Igor Dmitrievich Novikov, Hans Ulrik Nørgaard-Nielsen