CoachThe integration curve of an NMR spectrum is a curve, drawn above the signals, that rises by a step at each signal: the height of each step is proportional to the number of protons that give that signal.
Examples
Example 38.6 (Reading the steps)
In the spectrum of ethanol, the steps above the three signals measure 2, 1 and 3 units, from left to right: , and . Only the ratios count: steps of 12, 6 and 18 mm say the same thing.