file1='pk_vs_t_B1.txt'
file2='pk_vs_t_B7.txt'
;
a1=rtable(file1,2)
a2=rtable(file2,2)
;
!p.multi=[0,2,1]
!p.multi=0
xr=[.03,4.]
yr=[100.,10000.]
;plot_oo,a1[1,*],a1[0,*],ps=-1,xr=xr,yr=yr
plot_oo,a2[1,*],a2[0,*],ps=-1,xr=xr,yr=yr
oplot,a1[1,*],a1[0,*],ps=-1,col=122
END