Table 2: Best-fit spectral parameters for the lobes of 3C 15.
Model kT (keV)^a Abundance^b RS flux (0.5-5 keV)^c Photon Index^d PL flux (0.5-5 keV)^e red. $\chi^2$ (d.o.f.)

RS $\rm 2.9^{+1.6}_{-0.9}$ 0.4 (fixed) $(2.68\pm0.23)\times10^{-14}$ ... ... 2.1 (6)

PL ... ... ... $\rm 1.85^{+0.17}_{-0.16}$ $(3.07^{+0.35}_{-0.34})\times10^{-14}$ 1.8 (6)

RS+PL $\rm0.85^{+0.14}_{-0.08}$ 0.4 (fixed) $(8.70^{+5.80}_{-3.73})\times10^{-15}$ $\rm 1.33^{+0.35}_{-0.43}$ $(2.31 \pm 0.48)\times10^{-14}$ 0.41 (4)

^a The best-fit plasma temperature for the Raymond-Smith model, assuming a Galactic $N_{\rm H}$ of 3.03 $\times$ 10²⁰ cm^-2.
^b Metal abundance for the Raymond-Smith model.
^c Flux of the Raymond-Smith model in units of erg cm^-2 s^-1 (absorption corrected).
^d The best-fit power-law photon index.
^e Flux of the power-law model in units of erg cm^-2 s^-1 (absorption corrected).

**Table 2:** Best-fit spectral parameters for the lobes of 3C 15.
Model	kT (keV)^a	Abundance^b	RS flux (0.5-5 keV)^c	Photon Index^d	PL flux (0.5-5 keV)^e	red. $\chi^2$ (d.o.f.)
RS	$\rm 2.9^{+1.6}_{-0.9}$	0.4 (fixed)	$(2.68\pm0.23)\times10^{-14}$	...	...	2.1 (6)
PL	...	...	...	$\rm 1.85^{+0.17}_{-0.16}$	$(3.07^{+0.35}_{-0.34})\times10^{-14}$	1.8 (6)
RS+PL	$\rm0.85^{+0.14}_{-0.08}$	0.4 (fixed)	$(8.70^{+5.80}_{-3.73})\times10^{-15}$	$\rm 1.33^{+0.35}_{-0.43}$	$(2.31 \pm 0.48)\times10^{-14}$	0.41 (4)

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