Measures Nitrogen-15 Isotopic Composition (δ¹⁵N), Nitrogen-15 Apha Site Isotopic Composition (δ¹⁵Nα), Nitrogen-15 Beta Site Isotopic Composition (δ¹⁵Nβ), and Oxygen-18 Isotopic Composition (δ¹⁸O) for Nitrous Oxide (N₂O)