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Table 3.

Statistics for the paired RV differences from the repeated measurements.

Survey Mean σ Normalised Median MAD Normalised N
σ MAD
(km s−1) (km s−1) (km s−1) (km s−1) (km s−1) (km s−1)
APOGEE −0.02 5.26 6.8 0.00 0.23 5.9 43 596
GES −0.13 3.29 1.2 −0.16 0.63 1.0 31
RAVE 0.09 7.36 1.1 0.09 1.42 0.8 102 545
LAMOST −0.20 8.74 0.5 −0.09 3.42 0.4 1 893 154

Notes. Mean of the RV differences, σ is the standard deviation, normalised σ is derived from the σ divided to the square root of the sum of quadratic errors, Median of the RV differences, MAD is the median absolute deviation, normalised MAD is derived from the MAD divided to the square root of the sum of quadratic errors, and N is the number of paired differences.

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