Experimental trends in the angular dependance of the sticking probability can vary greatly from system to system, as summarized in Kindt and Tully and references therein. For example, CO deposited onto various substrates (Au, Pt, Cu, Ni) exhibit starkly different sticking probabilities as a function of incident angle deposition. Currently, our experiment is not configured to determine the sticking probability of CH3ONO onto various low-temperature matrices using a strategy such as the King and Wells technique. However, such a technique would not provide conformer-specific sticking information needed for this study due to the lack of isomeric specificity in a commercial mass spectrometer. Future experiments are needed that can measure conformer-specific sticking probabilities to begin unraveling the competition between energetic and surface morphological effects on abundance changes during matrix deposition of CH3ONO in N2, Ar, and Xe, but these are the scope of the present study.