For the old segment, both matrix-corrected weighted mean and Gaussian mean approaches yield comparable results (485 ± 11 Ma vs. 484 ± 11 Ma, Table ) and are in agreement with the ID-TIMS age of the pegmatite crystallization of GER2B (482 ± 5 Ma, 5 Fig. ). The Gaussian and weighted mean ages for the latter two segments also agree within their uncertainty covering a range of 373-383 Ma, and are in line with the ID-TIMS age of the deformation event (377 -~382 to Ma, 5 ). As anticipated, the uncertainty in the weighted means (2s x ) rises proportionally with the square root of the number of pixels (2515 pixels result in 0.4% uncertainty, while 200 pixels yield 1.0-1.5% uncertainty). Nevertheless, after accounting for all external uncertainties, the enhancement in measurement precision is somewhat mitigated (2515 pixels lead to 2.1-2.2% uncertainty, whereas 200 pixels result in 2.4-2.5% uncertainty).