1 INTRODUCTION  
2 OBSERVATIONS AND TARGET LINES  
3 DATA PROCESSING  
3.1 Line fitting procedure  
3.2 Optical depth calculations  
4 TEMPERATURE ESTIMATES  
5 COLUMN DENSITY ESTIMATES  
6 DISCUSSION  
6.1 A comparison to Milky Way and extragalactic absorption profiles  
6.2 Cloud size and mass estimates  
6.3 An estimate of the continuum source’s size  
6.4 Continuum variability  
6.5 Absorption variability  
7 CONCLUSIONS