The phrase "a somewhat lower frequency" is correct and usable in written English.
It can be used when discussing variations in frequency, such as in scientific, technical, or analytical contexts.
Example: "The experiment showed that the signal was emitted at a somewhat lower frequency than expected."
Alternatives: "a slightly reduced frequency" or "a moderately lower frequency".
This was achieved with a somewhat lower frequency antenna (250 MHz center frequency) than is commonly recommended in archeological geophysics.
A similar pattern could be observed in the spleen, albeit with a somewhat lower frequency.
The intensive option showed better local control and a somewhat lower frequency of distant metastases, but no effect on survival.
A somewhat lower frequency of methylated CpG sites was observed for the IL17C gene in UVB-irradiated cells (18.4% versus 29%).
Most of the applicators and children had detectable urine concentrations of 2,4-D at baseline, whereas the spouses had a somewhat lower frequency of detectable concentrations.
With ML, inference under the wrong model produced a somewhat lower frequency of topologically inaccurate trees, although each inaccurate tree was more inaccurate as judged by symmetric distance (Table 2).
"We can say that cancer certainly existed, and probably in somewhat lower frequency than it does today," said Arthur C. Aufderheide, emeritus professor of pathology at the University of Minnesota and co-author of the Cambridge Encyclopedia of Human Paleopathology.
The high signal intensity was found at the superior joint space in 91 % of fractured joints (N = 43), while somewhat lower frequency at the inferior joint space (N = 34, 72%%).
Cell lines from the oesophagus and urinary tract showed a somewhat lower mutation frequency, but in all cases higher than 25%.
Other recently reported series have found somewhat lower frequencies of PDGFRA mutations: Braggio et al (2008) reported frequencies of 7.3% in patients with completely resected GIST in a specific population from Brazil.
This was particularly obvious for abusive drinking (OR = 2.11), with a somewhat lower risk for drinking frequency (OR = 1.46).
