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The large blue bubble in the upper right corner of the plot shows the items (elements and attributes) that exist is all 18 NASA collections and in all 8 IDN collections.  This bubble includes 51 items, as shown in the legend.  The large red bubble in the lower left corner of the plot shows items that exist is one NASA collection and in zero IDN collections.  This bubble includes 44 items, as shown in the legend. The data for Chart 2 is accessible in Google Sheets.  To view the data and bubble chart in Google Sheets click on the image. 

Chart 2: NASA EXIST Provided Exists vs IDN Provided Exists

Accessing the Chart

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