Median of Galactocentric radial (top panel) azimuthal (middle panel) and vertical (bottom panel) velocity as a function of (R with a deconvolution correction according to Sect. 3.1). This is the result for Gaia-DR2 data including ν_r measurements with the constraints: |ℓ−180 ° | <  20°, |b|< 10°, . Vertical bars indicate the errors on the median velocity (without including the uncertainty in distance). Horizontal bars indicate the rms value of the mean deconvolved R (thus the indicated value is an average over that range of dispersion).