requires pyralysis:
https://gitlab.com/miguelcarcamov/pyralysis
datacolumn='DATA', # data column for input datacolumns_output='DATA', # data column to punch shifted vis. data
note the input ms will be copied to the output ms, and then overwritten - if there is a corrected' data column and data' is chosen for the output, the shifted corrected' will be punched into data', and corrected' will be the original. Best to use either both data' or both `corrected'.
fit for error bars in both coordinates from https://aip.scitation.org/doi/pdf/10.1063/1.4823074