{"number":1,"group":"aliphatic1","start":0.6,"stop":1.3,"description":"aliphatic methyl and methylene"}
{"number":2,"group":"aliphatic2","start":1.3,"stop":2.9,"description":"aliphatic methyl and methylene near O and N"}
{"number":3,"group":"oalkyl","start":2.9,"stop":4.1,"description":"O-alkyl, mainly from carbs and lignin"}
{"number":4,"group":"alphah","start":4.1,"stop":4.8,"description":"alpha-H from proteins"}
{"number":5,"group":"carb","start":4.8,"stop":5.2,"description":"anomeric proton of carbohydrates"}
{"number":6,"group":"aromatic","start":6.2,"stop":7.8,"description":"aromatic, from lignin and proteins"}
{"number":7,"group":"amide","start":7.8,"stop":8.4,"description":"amide from proteins"}