Table 2.

The fitting parameters of the two-component model ($M_2$ model) just ruled out at $2\sigma$ compared with the null hypothesis (with the mean value of $m_a$ in each bin).

$m_a$ (μeV)	$S_0$ (mJy)	$\alpha$	$g_{a\gamma \gamma }$ (GeV${}^{-1}$)
14–17	44	0.79	$3.4\times {10}^{-11}$
17–20	83	1.49	$9.0\times {10}^{-12}$
20–23	82	1.48	$3.8\times {10}^{-12}$
23–26	84	1.51	$4.6\times {10}^{-12}$
26–29	88	1.62	$9.6\times {10}^{-12}$
29–32	96	1.77	$1.3\times {10}^{-11}$

Here, the values of $g_{a\gamma \gamma }$ are the upper limits.