10" 10' 



' initial DC resistance 



initial AC resistance 



10^ 10° 



^^r 



V, V. 



10' lO'' 



r" 



initial capacitance 



10^ 10^ 



■ AC resistance 

 DC resistance 

 . Capacitance 



1 00 200 300 



Exposure Time (days) 



Figure 13. Electrical properties of System 121. 



