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Contour presentations of the 14,15N HYSCORE spectra of the l(N2H4) intermediate with 14N2H4 (A) and 15N2H4 (B) (magnetic field 345.9 mT (14N2H4) and 346.0 mT (15N2H4), time between first and second pulses τ=136 ns, microwave frequency 9.702 GHz (14N2H4) and 9.707 GHz (15N2H4).
