The phrase "achieving at most a" is correct and usable in written English.
It can be used when discussing limits or maximum values in various contexts, such as performance, results, or outcomes.
Example: "The experiment was designed to test the hypothesis, achieving at most a 20% increase in efficiency."
Alternatives: "reaching a maximum of" or "attaining no more than".
By virtue of scalable video coding and FEC for the recovery of lost packets, the proposed method achieved at most a 5 dB gain in PSNR.
This strategy is not a panacea, however: One can achieve, at most, a couple of percentage points of devaluation, since large changes in social contributions and the VAT would not be feasible.
The GEV system can achieve at most a 10-fold increase in protein expression from a single inducible allele [ 11].
By the end of the year, most of my peers resigned programming to nothing more than redundant lines of logic capable of achieving at most elementary data operations.
By contrast, the Toomey plan would have left most of the needed deficit reduction for the future (it would have achieved, at most, $1.5 trillion in deficit reduction) and secured a scant $300 billion from revenues.
Security In terms of security, homomorphic encryption schemes achieve at most IND-CCA1, which means that the scheme is not secure against an attacker with arbitrary access to a decryption oracle [30].
High sampling saturation was achieved at most study habitats with minimal sampling effort, suggesting that the utilization of molluscs as bioindicators can expedite freshwater conservation initiatives.
These results compete with composite approach of [15] and are far superior to the curvelet technique in [16], which can achieve at most NCORR 0.52 for the AWGN attack.
Those patients were in BC prior to transplantation and had achieved at most MMR after HCT.
Protection from diabetes after B 9-23/IFA immunisation cannot be achieved once diabetes is fully established, but can be achieved at most prediabetic stages of the disease.
