These plots show both mean and sigma for BBQ and MXQ boards for all pedestal runs since day 334 in 2021. bd0 is the BBCE board for comparison - it is a good board with stable sigmas and means. The runs are ordered starting with day 334 in 2021 and ending on day 6 in 2022.
the behavior of means and sigmas for board 3 (VP003) in both mxq and bbq are similar. Same for board 4 (VP004).

220107: I plot in the files labeled *.bd*.meansig.220107.png the values of the mean pedestals taken since run230101 with the sigma as the error bars on each point. Note that there is considerable variation in means and sigmas even after replacing the splitter.