diff --git a/NumericalData/CDPP-AMDA/IRM/MAG/irm-mag-all.xml b/NumericalData/CDPP-AMDA/IRM/MAG/irm-mag-all.xml
index 2832092..ef3d920 100644
--- a/NumericalData/CDPP-AMDA/IRM/MAG/irm-mag-all.xml
+++ b/NumericalData/CDPP-AMDA/IRM/MAG/irm-mag-all.xml
@@ -194,14 +194,15 @@
            <Name>sig(b)/b</Name>
            <ParameterKey>irm_b_nsig</ParameterKey>
            <Description>
-               Normalised sigma of B distribution
+               Normalised sigma distribution of B 
            </Description>
-           <RenderingHints>
+          <Units></Units>
+          <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>
-           <Structure>
-               <Size>1</Size>
-           </Structure>
-       </Parameter>
+          <Mixed>
+              <MixedQuantity>Other</MixedQuantity>
+          </Mixed>
+      </Parameter>
 </NumericalData>
 </Spase>
--
libgit2 0.21.2