diff --git a/NumericalData/AMDA/Cassini/RPWS/cass-lp-ni.xml b/NumericalData/AMDA/Cassini/RPWS/cass-lp-ni.xml
index d53b193..aa89209 100644
--- a/NumericalData/AMDA/Cassini/RPWS/cass-lp-ni.xml
+++ b/NumericalData/AMDA/Cassini/RPWS/cass-lp-ni.xml
@@ -44,8 +44,8 @@
             * spacecraft wake measurements that have not properly been removed (rare), 
             * moon eclipses (very rare).
           
-            Each data point corresponds to one voltage sweep. Occasionally the fit to the sweep is not very good. Usually a data point with an error 3 times the estimated value or larger is considered a bad data point, but this has to be evaluated from case to case. A good way to do this is to compare with the electron density derived from the upper hybrid resonance frequency or with the ion density obtained from CAPS measurements. The data can also be compared to previous measurements from the same region which should show similar densities.</Caveats>
-        
+            Each data point corresponds to one voltage sweep. Occasionally the fit to the sweep is not very good. Usually a data point with an error 3 times the estimated value or larger is considered a bad data point, but this has to be evaluated from case to case. A good way to do this is to compare with the electron density derived from the upper hybrid resonance frequency or with the ion density obtained from CAPS measurements. The data can also be compared to previous measurements from the same region which should show similar densities.
+            Note that data is very irregular.</Caveats>
         <Parameter>
             <Name>ion density</Name>
             <ParameterKey>cass_lp_ni</ParameterKey>
@@ -58,6 +58,15 @@
                 <ParticleType>Ion</ParticleType>
                 <ParticleQuantity>NumberDensity</ParticleQuantity>
             </Particle>
-        </Parameter>                       
+        </Parameter> 
+        <Parameter>
+            <Name>ion density error</Name>
+            <ParameterKey>cass_lp_ni_err</ParameterKey>
+            <Ucd/>
+            <Units>%</Units>
+            <RenderingHints>
+                <DisplayType>TimeSeries</DisplayType>
+            </RenderingHints>           
+        </Parameter>                         
     </NumericalData>
 </Spase>
--
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