The phrase "and observed levels of" is correct and usable in written English.
It can be used in contexts where you are discussing measurements or findings related to certain levels of a variable or phenomenon.
Example: "The researchers conducted a study and observed levels of stress among participants during the experiment."
Alternatives: "and recorded levels of" or "and noted levels of".
Studies of the frequency of rock deposited on the seafloor by icebergs have recorded variations in the size of sediment grains that provide evidence of changes in seafloor currents, and observed levels of the carbonate content of subtropical sediments have pointed to cycles of little ice ages occurring roughly every 1,000 to 2,000 years.
This comparison suggests that learning is an important consideration when explaining differences between predicted and observed levels of tax compliance.
The results of the current study suggest that perceived social disorder and observed levels of physical disorder have a strong impact on fear of crime.
According to the Organization for Economic Co-operation and Development (OECD 2015), computer access and use are comparatively low in Japanese schools which could explain the discrepancy between the students' expected and observed levels of ICT proficiency.
The R environment was also used to calculate Pearson's product moment correlation coefficient between samples sizes and observed levels of diversity (e.g., number of haplotypes).
The mean number of alleles per locus was 3.1, and the mean values of the expected and observed levels of heterozygosity were 0.406 and 0.322, respectively.
However, we observed an increase over time of soluble GST and MBP, that reflected the previously observed levels of processed GrB (see Fig. 2A for comparison).
Notably, in thymic fibroblasts, we observed levels of TGFα and HB-EGF that were elevated relative to those of TECs, as well as the presence of the EGF receptor (Figure 6B).
As a further method of validating our microarrays, we compared our average observed levels of transcriptional and epigenetic signals to previously described signals within specific gene elements across the entire locus profiled.
In the surveys, we will ask respondents to provide personal and professional details that might influence observed levels of behaviour.
One should also note that marker type can influence observed levels and extent of LD.
