Pronouns

Hello Everyone,

doing my assignment, I faced with the problem. Sometimes using pronouns is confusing. Here is I tried to make a sentence. But I’m not sure whether reader can understand it.

Fuller charts and better forecast may improve results, however, they may differ a little from the previous ones.

Pronoun “they” in the second part of the sentence is linked to results. But I’m not sure that reader can figure it out. Please, explain to me how to use pronouns in such kind of situations.

In that case, avoid using a pronoun and say ‘however, the results may differ…’

ok. thank you.