Don’t know if there is a different A320 EIS standard available but the FCOM DSC-31-40-K we use describes the Lateral Deviation Scale “dots” as representing 0.1Nm and does not vary with the selected RNP. For an RNP-AR 0.3 approach we would call LDEV at 1 dot (because that is reached before 1/2RNP) and go around at 2 dots (still less than RNP). For RNP 0.1 LDEV is called at 1/2 dot deflection and GA at 1 dot. Confusing eh?