Structural parameter results of fitted measured CTRs (Fig. 8a) and measured RAXR data (Fig. 7). (a) Strontium and lanthanum occupancies retrieved through fits of RAXR data. Horizontal lines indicate the expected occupancies ΘLa = 0.6, ΘSr = 0.4. (b) A comparison of RAXR fitted occupancies (solid lines) and results from the combined fit of a non-resonant and a resonant CTR (dotted lines). (c) The number of electrons per AO plane from A sites retrieved through RAXR data (filled upright triangles and solid line) and the combined fit of non-resonant and resonant CTRs (filled upside down triangles and dotted line). The horizontal line shows the expected number of electrons at A sites (46.8 electrons).