QA for IoT Data Sets

I have an IoT sensor sending data to the Azure Event Hub -> then to Power BI.  Works great.

It's a simple, one-table solution.  Sending every 10 minutes:  Temp (int), Humidity (int) and LocalDateTimeCSD (datetime).  

In the QA tool, I'm trying to write some questions to pin like these: 

* What's the current temp?

* What's the max temp for today?

* What was the minimum temp for yesterday?

As you can see from the pic below, they don't work.  Max, Maximum, Highest, Lowest, Greatest, Smallest <- all don't work.  Only Average works.

In this case, if you look at the pic, you'll see that it's SUMMED the temp (which I don't want, obviously) and it tells me it's listing something in descending order (which it isn't, since it's aggreated) - Very odd.  

Has anyone gotten natural lanugage QA working with time-series data like this?