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    PR # 32265                                                                   
     Cluster mass profiles at moderate reshifts (Z~0.1) are poorly               
     determined due to the fact that the small number of counts make the         
     temperature errors large. At z>0.07 the GIS can cover more that 2MPC        
     Theory indicates that clusters at this redshift should be evolving          
     rapidly. In closer clusters the mass is rising with radius linearly,        
     and the ratio of the gas mass to the total mass is also rising. To          
     accurately determine the mass profile of moderate redshift clusters         
     high quality temperature profiles are needed. These data will be            
     compared to low redshift clusters to constrain evolutionary effects.        
                                                                                 
                                                                                 
                                                                                 
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