Residual additive bias correlations of three groups of galaxies: (1) σ = 2.1 (upper), (2) σ = 3.5 (middle), and (3) a mixture of σ = 2.1 and σ = 3.5 (lower). The results are measured based on CFHTLenS w2, including 16 pointings and 7 exposures on each pointing. The data points are offset by a small distance to improve visibility, and a dashed error bar means the value is negative.