Nitrogen has two stable isotopes: Nitrogen-14 and nitrogen-15. If a sample of nitrogen gas (N2) is analyzed using mass spectrometry, the following peaks (relative height in parenthesis) are obtained: m/z 28 (100 %); m/z 29 (0.731 %); m/z 30 (0.001 %). Using this data, calculate the abundance of each isotope.