has_metric_category n-tuple ID free metric chromatogram metric area under TIC RT quantiles The metric informs about the dynamic range of the acquisition along the chromatographic separation. Differences between samples of an experiment may indicate differences in chromatographic performance, differences in the dynamic range and/or in the sample content. The area under the total ion chromatogram of the retention time quantiles. Number of quantiles are given by the n-tuple. MS MS:4000156