Left-hand section: diffusion lengthscale (Gaussian kernels) as function of ratio between ordered and turbulent magnetic fields. Right-hand section: streaming lengthscale (exponential kernels) as function of total magnetic field. Pluses correspond to smoothing experiments with losses, triangles to experiments without losses. The expected relations are shown with dotted lines. The galaxies where we think that diffusion or streaming is the dominant transport mechanism are marked in boldface.