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The simulations are performed on $16^3\\times 4$ lattice along the lines of constant physics at $m_{\\rm PS}/m_{\\rm V}|_{T=0}=0.65$ and 0.80, where $m_{\\rm PS}/m_{\\rm V}|_{T=0}$ is a ratio of meson masses in PS and V channels at $T=0$. A temperature range is $T/T_{\\rm pc}=(0.8 - 4.0)$, where $T_{\\rm pc}$ is the pseudo-critical temperature. 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