The phrase "are probably underestimated" is correct and usable in written English.
It can be used when discussing a situation or subject where the true value or significance is likely lower than what is perceived or acknowledged.
Example: "The contributions of volunteers in our community are probably underestimated, as they play a crucial role in various initiatives."
Alternatives: "are likely undervalued" or "are possibly overlooked."
Consequently, our estimated SO2 emissions for the sub-Plinian eruption stage (Table 2) are probably underestimated considerably.
Therefore, both (bar {varepsilon }_{text {init}}) and (bar {varepsilon }_{text {final}}), but possibly (bar {varepsilon }_{text {init}}) to a larger extent, are probably underestimated in the measurements.
With the secular approach, as in TrES, these occurrences are probably underestimated in systems with moderate hierarchies (see also Naoz et al. 2016).
Generally, these reported values are probably underestimated, and some have calculated that the cost of blood to society could in fact be twofold higher [84].
Frankly, these numbers are probably underestimated because of conservative estimates we used.
However, B. parapertussis infections are probably underestimated, most likely because the disease is milder than that caused by B. pertussis [17], [18].
And Dr. Angus Nicoll, chief of flu activities at the European Center for Disease Prevention and Control, acknowledged that "we are probably underestimating the extent of person-to-person transmission".
He told VICE News that, if anything, he and Levermann are probably underestimating the possibilities.
Therefore we are probably underestimating the true rates of injury.
So, while traditional approaches are probably underestimating resource partitioning, and molecular approaches probably underestimate resource sharing, knowing how to compensate is not clear.
Attempting to incorporate data on provision from the private sector would probably strengthen this further so that we are probably underestimating the area deprivation effect in this study.
