Huawei Watch Gt 2 Watchface?

I bought the Huawei Watch Gt 2 about a week ago. Now I came across this watchface, which I actually really like. However, I have not yet understood what this ad stands for (see picture). Does anyone have any idea what the meaning could be?

I would have said temperature now.
Nothing else makes sense from the numbers.

Look at the top, there's 20 ° C.

But I also thought at first.

Or it stands for the lowest and highest temperature of the day. You're definitely right.