1. INTRODUCTION

2. OBSERVATIONS  
2.1. Observation Selection  
2.2. Data Reduction

3. SPECTRAL ANALYSIS METHOD  
3.1. Model Description  
3.2. Systematic Errors

4. SPECTRAL ANALYSIS RESULTS  
4.1. Variation with Galactic Longitude and Latitude  
4.2. Differences between the Galactic Hemispheres

5. DISCUSSION  
5.1. Comparison with Previous Studies  
5.2. Effect of the Foreground Model  
5.3. Possible Contamination of the Halo Emission  
5.4. The Morphology of the Hot Galactic Halo  
5.5. The Origin of the Hot Galactic Halo

6. SUMMARY