Stellar element-to-iron NLTE abundance ratios for the α-process elements Mg, Si, Ca, and Ti in the Sculptor (red circles), Ursa Minor (green circles), Sextans (squares), Fornax (rhombi), Boötes I (triangles), UMa II (inverted triangles), and Leo IV (5 pointed star) dSphs and the MW halo. Two Mg-poor stars in Sculptor, 11_1_4296 and ET0381, are plotted by a red circle inside larger size open circle. The error bars were computed as . The errors of [Fe/H] do not exceed 0.15 dex for most (51 of 59) stars. In each panel, the dashed line indicates the mean for the MW halo.