Convert JNB to SPW

Both the .jnb and .spw files come from SigmaPlot software, the first is a workbook and the second one is a worksheet, which means that some kind of conversion or export is most likely possible. Perhaps it's just export of worksheet from workbook that can be done with some innate export function. Unfortunately, we do not have any information about any 3rd party tool that could be otherwise used for the purpose of jnb to spw conversion. If you have any issues with these file types, it would be perhaps best to contact SigmaPlot support.