1. Introduction

2. Observations and data reduction
2.1. Data quality after reduction
2.2. Line identification
2.3. Flux calibration accuracy

3. Overview and results
3.1. Detected lines and species
3.2. Line profiles
3.3. Line density
3.4. The continuum
3.5. Rotational diagrams for CO isotopologs
3.6. Comments on individual species

4. Discussion
4.1. Interpretation of the kinematic components
4.2. Line and continuum cooling

5. Conclusions