Dear Ibrahim

Could you give us an example of the problem?

Dear Zülküf İbrahim Erkol , I can share you some things I learned from practice.

These mentioned aspects can help you in making your research question more specific and prepare you for an approach.

Average precipitation based on observation stations can be calculated with the help of:

Theissen Polygon method

Average mathematical method

Isohyetal method

Sefa Nur Yesilyurt, it'd be better if you just could check out the answers and let me know whether or not you make any sense out of them.

Nanco Dolman Firstly, I'd like really to thank your for your comprehensive answer.

Compatible time series - Are the times series of precipitation data of the 7 observation stations comparable? Both in same dates (e.g. years), as well in same interval (e.g. 1 hour)?

As of my precipitation datasets, mine are observed monthly precipitation rates.

Plus, all of them corresponds to the same dates and has the same interval. What path do you think I'm supposed to follow in my case.

Thanks in advance

Best

İbrahim ERKOL