What causes the TMV calibration to be other than 13.1 kDa/A?
The STEM calibration varies slightly over time and with hardware modifications to the data acquisition system. We frequently include TMV controls in unused slots of the freeze dryer and plot the long-term trend of all measurable TMV segments. We will include our best estimate of the current TMV calibration when we notify you that your images are available on ftp.stem.bnl.gov.