Live Weather: Wet: 0,70 = 3,5 mm?

The Live Weath fails to show Water on track in mm. But that is what we have to use in Race Setup!
Live Weather shows a number without unit. Beaker has some marks, but lacks unit, too.

Afaik, full beaker is 5mm. In the pic above beaker seems to be filled 70%. So I guess "Wet: 0,70" means 70%.
Now I have to multiply 70% with 5mm to get water on track: 3,5mm

Suggestions:
- Please remove this number without unit (0,70).
- Show it multiplied by 5 and state the unit "mm" like "Water on track (mm): 3,5"
- Show unit (mm) at beaker.
- State, that full beaker means 5mm.
- Explain "Live weather" in Guide.

+1.

+1
I often thought it was in mm. eg 0,70 is 7mm 

yeah this is actually hugely annoying, suprised it hasnt been fixed earlier

My take is that the bulb holds 2mm and that the figure is just an indication to show if it's getting wetter or drying out.

I have a point on the gauge when I'm attending a race where I swap tyres, the actual reading in mm is irrelevant to me so I don't see it as being a problem.

Yes, bulb holds roughly 2mm. To be precise: first major tick is 2mm.
No, the figure at the left exactly shows amount in beaker.

Maybe my take of this is too scientific. Just removing the figure might be an option as well.

I find the figure extremely useful as an indicator of whether the track is drying out or getting wetter.

The 2 significant figures show within a lap whether the rain is easing off, especially useful if it's a passing shower.

Ok, but as stated above: the figure correlations with "water on track in mm". So, why not showing that figure instead of a units less, unclear, hard to understand figure?