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The polled data for the interface is so low, the value is so close to zero, when seen alongside the lone >0 value with a 'normal' value, causes scaling problems in the UI View.
Defect DE170337 was submitted to resolve this. It will set things to see data like this and create it as a zero in Portal UI Views.
The raw real data values, those barely >0, would still be available in the DA Odata exports.
At this time there is no ETA from engineering specifying a release the fix would be included in.
To determine the release a fix is included in monitor the Resolved Issues documentation for the inclusion of DE170337.