Line chart from multiple parameters

Here's the problem:

My data output from a calculation looks like this (T(x) being the column heading):

I upload into Power BI and I get this in the 'fields':

I now need to make a chart which ranks from T-3 to T+3 in Power BI with each value correctly in each column.  Something like this:

But that is evidently beyond my skills.  Can anyone help me?

Thank you in advance.