1. A form of processed data could be an NMR or frequency domain spectrum presented in association with a chemical structure representation. The combination of the two can be used to confirm the identity of e.g. the product of a chemical synthesis. 2. The corresponding primary or raw form would be the time-domain data as produced directly from an NMR instrument, to be converted by e.g. a Fourier Transform operation to a frequency domain presentation that is more readily analysed. The process of converting the primary data to the processed form is of course lossy; some information at least is lost by this conversion.