I am trying to edit a legend in ArcGIS online because the field directly from the original dataset is undescriptive. I am able to rename the layers, edit the field names of the individual points, but not the legend itself.
Here is what the legend currently looks like.
It is unclear what concentration is being shown or in what units. Is there a way to edit the legend label directly in ArcGIS online without the process of editing the .csv file or exporting the .zip file into ArcGIS online all over again?