The phrase "a substantial excess" is correct and usable in written English.
It can be used to describe a significant amount that exceeds a certain limit or expectation.
Example: "The company reported a substantial excess in its budget, allowing for additional investments in new projects."
Alternatives: "a considerable surplus" or "a significant overage."
The suspension contained 5 mmol of the dye at the beginning of the kinetic test, which is a substantial excess over what can be absorbed by the catalyst.
A recent evaluation of these data demonstrated that there is a substantial excess of studies with statistically significant results, which strongly suggests the presence of selective reporting bias [22].
There is still a substantial excess in the screened population at 20 years.
There was a substantial excess risk of advanced stage at diagnosis among breast cancer women ⩾70 years of age.
In contrast, in D. melanogaster there is a substantial excess of singletons at polymorphic nonsynonymous sites (fig. 3 d ).
The repeated subsequences do not necessarily preserve reading frame, although there is a substantial excess of those that do.
Patients with quinolone-resistant strains had a marked and substantial excess mortality, which could not be explained by imbalances in comorbidity.
Even in a situation where substantial excess mortality was noted in the bacteremic cohort, the deleterious impact appears to be of minor importance when using the overall cohort as denominator.
There was a substantial proportional excess, but very small absolute excess of in situ cancers, which was again balanced by a deficit in invasive cancers (Fig. 4).
For example, it can be achieved with the help of local "burning" oxidizers inside a confined space due to the substantial excess vapour of the future nanoparticle ball lightning fuel.
In 2007, 50% of obese women endorsed either 'very overweight' or 'obese', compared with just 33.6% in 2012, indicating a significant decrease in recognition of substantial excess body weight (χ=8.45 p<0.01).
