you need - the distance between them as reference to calculate the new systemsThe thing about this whole process that is nagging at me is, why the curved lines coming from Merope and the (suggested) Col 70 system pointing to the area at the top? The process we go through doesn't have anything to do with those two systems, yet if you follow the spectrogram as though it is a set of instructions, it would imply that you need to do something from Merope and Col 70, no?