mp,murx,arg1,1
mptemp
mptemp,,0,20,50,75,150
mptemp,6,200,300
rcopper=1/(5.8e7)
mpdata,rsvx,arg1,1,rcopper/1.0852,rcopper,rcopper/.8946,rcopper/.8222
mpdata,rsvx,arg1,5,rcopper/.67,rcopper/.6065,rcopper/.5
/auto
/view
/grid,1
!  mpplo,rsvx,arg1