Xamarin, How to create a chart inside .xlsx using code?

I have a list of pulse values ​​at a certain time and I want to build a chart from this data

In the screenshot is an example what I want

At the moment I am able to create an xlsx file and write values ​​to cells, but how to create a chart from this data? I use the NPOI library

I attach a link to github with the function code of creating an xlsx file, filling cells and basic chart

Using the Jason example, I was able to build such a simple chart. However, there are questions about his appearance Is it possible for a diagram to make a title? Also, I would like to designate the axis titles In the example there is a title of the series, which I would like to remove, if it is not specified, then it is created automatically, if you make the name empty, then there will be only a strip on the side, which reduces the whole chart, how to get rid of the title of the series? There is also a question whether it is possible to use data from another page for a chart

I also found out that the document does not open, when I try to use "double" ​​in the diagram, I don’t know the reason for this error

from Xamarin, How to create a chart inside .xlsx using code?