Wojciech Wisniewski Quality Leader

Hi,

Actually, I am looking for an answer about reference level used for computing when captured waveform has noise like in attached picture. If method parameter is set to auto, then oscilloscope pick MinMax or Histogram method. I suspect that the rise time measurement can be affected by noise so would like to know actual values of reference level.
 

Is it possible to read actual values of reference level computed by oscilloscope for rise time measurement?
For example, reference levels are set to default so low=10% and high=90%. Once waveform is captured, how to read actual voltage values?