I want to be able to create a macro on topspin that can find a peak in the spectrum and calculate its integration evenly according to specific Hz. For example, I have a spectrum with peaks at 10, 20, 30, 40, and 50 ppm. I want the integration for peak at 10 and 50 ppm. For 10 ppm (1257 Hz) peak the integration should be between 1267-12547 Hz (delta 20 Hz).For 50 ppm (6288 Hz) peak the integration should be between 6298-6280 Hz (delta 16 Hz).