| Acronym | Meaning |
 | GKS | Graphic Kernal System |
| GTS | Global Telecommunication System |
| ISOC | Integrated Science Operations Center |
| BPI | Budget |
| NLTE | Non Local Thermodynamic Equilibrium |
| MUG | McIDAS Users Group |
| GPO | Government Printing Office |
| PAN | Peroxyacyl Nitrates |
| PAR | Performance Assurance Requirements |
| ESSC | Environmental Science Services Administration |
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