Z-score for human-microarray and mouse ish-data

hi @jeremyinseattle , I’ve already read it but it doesn’t really address the issue. my questions basically are: can I calculate the z-scores provided for one probe using the expression-levels of this probe and if so, how? because I don’t get the same values with the formula stated here: What is the Z score reference value in RNAseq GBM data?
you might want to clarify what the x is in your formula, in case it isn’t the expression-level (which I assumed). thanks!