Projected correlation function w_g +  as a function of comoving transverse separation r_p for different SDSS samples. Top panel: shown is w_g +  for the red SDSS L4 (in black) and L3 (in red) samples. The curves correspond to the best-fit models when only varying the amplitude A. Bottom panel: same as above, but for the SDSS LRG medium brightness sample split into two redshift bins, where results for z < 0.27 are shown in black, and for z > 0.27 in red. The point for the z < 0.27 subsample at the smallest r_p is negative and thus not shown. Note that the red points have been slightly offset horizontally for clarity, and that the error bars are correlated. Only the data points outside the grey region have been used for the fits.