Median [C/Fe] as a function of the projected elliptical distance. Stars from the final selection of Sgr PIGS/AAT. The median is obtained removing the sample from CEMP stars and dividing it into distance bins and into two sub-groups, the more metal-poor (blue circles, −2.5 < [Fe/H] ≤ −2.0) and the slightly more metal-rich (navy circles, [Fe/H] > −2.0). Stars have been selected to have 1.8 < log g < 2.3.