On the local variation of the Hubble constant
  We have carefully studied how local measurements of the Hubble constant,
$H_0$, can be influenced by a variety of different parameters related to survey
geometry, depth, and size, as well as observer position in space. Our study is
based on N-body simulations of structure in the standard $\Lambda$CDM model and
our conclusion is that the expected variance in measurements of $H_0$ is far
too small to explain the current discrepancy between the low value of $H_0$
inferred from measurements of the cosmic microwave background (CMB) by the
Planck collaboration and the value measured directly in the local universe by
use of Type Ia supernovae. This conclusion is very robust and does not change
with different assumptions about survey geometry and effective sky coverage or
observer position in space.
