format json using jsonviewer.stack.hu
hncacb peaks:  tag those on edge of spectrum where weird artifacts occur as edge peaks
hncacb: tag presumed spectral artifact peaks as such
hncacb peak:  wrongfully tagged as processing artifact
create spin systems -- 1 per hsqc peak; place hnco peaks into spin systems based on matching of n/h chemical shifts
increase h/n tolerances for matching hnco peaks into nhsqc spin systems, possibly introducing false positives