10−6Wm−210^{-6} \mathrm{Wm}^{-2}10−6Wm−2
10−8Wm−210^{-8} \mathrm{Wm}^{-2}10−8Wm−2
10−10Wm−210^{-10} \mathrm{Wm}^{-2}10−10Wm−2
10−12Wm−210^{-12} \mathrm{Wm}^{-2}10−12Wm−2
