Bring a difference between two time series based on class to zero

[harmonic]

Hello Community,

I am struggling with a time series study.

My goal is to find a constant or coefficient to add it to my equation to bring the differences between these two series to zero.

My approach is clustering these class to reduce the complexity of my problem because I would like to find common coefficients and use them for clusters of class. 

However, looking at my series, it seems that there is a seasonal factor that helps me, although not in all my classes.

What could be the correct approach to find this factor or coefficient that brings this difference to zero.

Thank you 🙂

[Ksharp]

You gotta need Wavelet Analysis:
https://communities.sas.com/t5/SAS-Communities-Library/Introduction-to-Wavelet-Analysis-using-SAS-IM...

https://communities.sas.com/t5/SAS-Communities-Library/Wavelet-Analysis-using-SAS-IML-Thresholding-t...