Focusing on reality:
* Real
* True
* Observed
* Measured
* Empirical
* Achieved
* Attained
* Produced
Focusing on comparison:
* Effective
* Net
* Final
* Finalized
* Netted
* Realized
Focusing on precision:
* Precise
* Exact
The best synonym will depend on the context of your sentence. For example:
* "The actual yield was higher than expected." could be replaced with "The real yield was higher than expected."
* "The actual yield was 10%." could be replaced with "The measured yield was 10%."
Let me know if you can provide me with the full sentence you're trying to write, and I can suggest the most appropriate synonym.