Table 1: A brief summary of recent constraints on the PPN-parameters.
Mercury Perih. Shift ² $\vert 2\gamma_{0}^{\rm PPN}-\beta_{0}^{\rm PPN}-1\vert<3{\times}10^{-3}$

Lunar Laser Rang.³ $4\beta_{0}^{\rm PPN}-\gamma_{0}^{\rm PPN}-3~=~-(0.7\pm 1){\times}{10^{-3}}$

Very Long Bas. Int.⁴ $\vert\gamma_{0}^{\rm PPN}-1\vert~=~4{\times}10^{-4}$

Cassini spacecraft ⁵ $\gamma_{0}^{\rm PPN}-1~=~(2.1\pm 2.3){\times}10^{-5}$

References: ² Shapiro (1993); ³ Williams et al. (1996);
⁴ Shapiro et al. (2004); and ⁵ Bertotti et al. (2003).

**Table 1:** A brief summary of recent constraints on the PPN-parameters.
Mercury Perih. Shift ²	$\vert 2\gamma_{0}^{\rm PPN}-\beta_{0}^{\rm PPN}-1\vert<3{\times}10^{-3}$
Lunar Laser Rang.³	$4\beta_{0}^{\rm PPN}-\gamma_{0}^{\rm PPN}-3~=~-(0.7\pm 1){\times}{10^{-3}}$
Very Long Bas. Int.⁴	$\vert\gamma_{0}^{\rm PPN}-1\vert~=~4{\times}10^{-4}$
Cassini spacecraft ⁵	$\gamma_{0}^{\rm PPN}-1~=~(2.1\pm 2.3){\times}10^{-5}$

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