1 INTRODUCTION

2 OBSERVATIONS AND DATA ANALYSIS  
2.1 Sample selection  
2.2 Observations and data reduction  
2.3 Line detection  
2.4 Line identification  
2.5 SED fitting  
2.6 Line fitting  
2.7 Literature data  

3 RESULTS AND DISCUSSION  
3.1 CO detections  
3.2 Redshift Distribution  
3.3 Gas Excitation  
3.4 CO(1–0) luminosities  
3.5 Gas Mass Tracers  
3.6 The star-forming main sequence  
3.7 Implications for galaxy evolution  

4 CONCLUSIONS