Displayed ET value questions

What is the numerical ET value displayed on the VP UV/Solar graph window? Looks like it should be the daily total if the cursor is moved to the current time but it’s too low. Right now it’s showing 0.011 inch, but the VP console and the sun/ET window both show 0.28" for the day.

The sun/ET window seems to have a problem because it is showing 0" for both yesterday and monthly ET.

I never really looked at ET before, are there some settings I should check?