We present experimental data and theoretical interpretation of NMR spectra of
remotely magnetized samples, detected in an unshielded environment by means of
a differential atomic magnetometer. The measurements are performed in an
ultra-low-field at an intermediate regime, where the J-coupling and the Zeeman
energies have comparable values and produce rather complex line sets, which are
satisfactorily interpreted.Comment: 8 pages, 8 figs, appearing in JMR (2016
