We show in Figure signal integral of each MQ-SC experiment as a function of the excitation block pulse phase and the resulting Fourier transformation of this MQ-SC profile yields the amplitude for the MQCO for each phosphate-containing species, in powder form at room temperature (A) and vitrified at 100 K in DNP juice (B). We find for HAp even and odd coherence orders up to 14 and 13, respectively, at room temperature (Figure ). When samples are dissolved into DNP juice and characterized at 100 K, we find the measured coherences orders to be comparable at 14 and 11 for the same excitation time (Figure ).