  Within Israel-Stewart's theory of dissipative hydrodynamics, we have analyzed
ALICE data for the centrality dependence of charged particles multiplicity,
elliptic flow and $p_T$ spectra in $\sqrt{s}_{NN}$=2.76 TeV Pb+Pb collisions
and obtained the temperature dependence of the QGP viscosity over the entropy
ratio ($\etas$). If temperature dependence of $\etas$ is parameterized as
$\etas=\alpha \frac{T-T_c}{T_c}+\frac{1}{4\pi}$, experimental data favor
$\alpha$ in the range 0-0.2. $\alpha \geq 0.4$ is not favored by the data.
Experimental data in $\sqrt{s}_{NN}$=200 GeV Au+Au collisions however, prefer
$\alpha$=0.4.
