has_metric_category has_units has_value_concept has value type intensity unit single value ID based metric MS2 metric identified MS2 precursor intensity distribution mean The metric informs about the dynamic range of the acquisition in relation to identifiability. MS From the distribution of identified MS2 precursor intensities, the mean. The used type of identification should be noted in the metadata or analysis methods section of the recording file for the respective run. In case of multiple acceptance criteria (FDR) available in proteomics, PSM-level FDR should be used for better comparability. MS:4000163