Table 4: Number of multiple-planet systems detected and measured by Gaia.
Case Number of Systems

1) Detection $\sim$ 1000

2) Orbits and masses to

better than $15{-}20\%$ accuracy $\sim$ 400-500

3) Successful

coplanarity tests $\sim$ 150

**Table 4:** Number of multiple-planet systems detected and measured by Gaia.
Case	Number of Systems
1) Detection	$\sim$ 1000
2) Orbits and masses to
better than $15{-}20\%$ accuracy	$\sim$ 400-500
3) Successful
coplanarity tests	$\sim$ 150

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