500 



400 



300 



2 200 



CO 

 LU 



100 - 



[ 



-J- 



NEEDLES 



i I i L 



DESORPTION 

 □ ADSORPTION 



1 STANDARD DEVIATION 



1 







O.OI 



0.06 



0.02 0.03 0.04 0.05 

 BULK DENSITY (G/CM^) 

 Figure 8A. — Response of timelag to changes in Uttev bed bulk density. 



500 



400 



300 



to 



2 200 



CO 



100 



A I A 



1 



J_i 



0.01 0.02 0.03 0.04 

 BULK DENSITY (G/CM') 



0. 05 



o DESORPTION WITH SOLAR 



□ ADSORPTION FOLLOWING SOLAR 



J STANDARD DEVIATION 



0. 06 



Figure 8B. — Response of timelag to ohanges in litter bed bulk density with or 



following solar heating. 



15 



