Experimental limits on the fundamental Planck scale in large extra   dimensions
  I present an up to date set of limits on the fundamental Planck scale M_D. The best limit for each number of extra dimensions n is shown in bold font. For n = 2, M_D > 5.6 TeV; n = 3, M_D > 4.4 TeV; n = 4, M_D > 3.9 TeV; n = 5, M_D > 3.6 TeV; n = 6, M_D > 3.3 TeV; and for 6 < n < 9, M_D > 0.8 TeV. 
Douglas M. Gingrich
hep-ex gr-qc hep-ph hep-th