Instrument Calibration History documents can be found here: click on the links below to access calibration document for specific Unit.
Sign error was discovered in calculation of the non-linear correction (NLC) for all ASSISTs. The NLC was recaluclated for all machines in 2015-02. Many previous calibration runs were reprocessed witht the new corrections. The results for the reprocessed runs and new calibrations with the updated NLC correction can be found here.