Hello, this is my first post in the forum, and I decided write here because I cant put the hours like scale.

I have to do temperature plot, I read two types of variables, the time and the temperature.
I can draw the plot, but using those information:
xVal yVal
1 26º
2 12º
3 16º
4 22º

untitled.jpg

but I need view the plot like this
hrs yVal
10:00 26º
10:05 12º
10:10 16º
10:15 22º
All the information that I need I have in these arrays
QwtArray<double> xVal;
QwtArray<double> yVal;
QList <QString> tmr

untitled1.jpg

I need the information like a picture but I cant put labels or something in xBotton
anyone can help me?