Table 2: Upper limits (3 $\sigma$ confidence level) on the Equivalent Width of an emission line (Gaussian model), at various energies and widths.
E (keV) 6 6.4 6.7 7

$\sigma$ (keV) U.L. (eV) U.L. (eV) U.L. (eV) U.L. (eV)

0 173 117 37 97

0.1 209 130 48 99

0.2 255 150 71 91

0.3 262 161 90 97

0.4 254 173 113 111

0.5 235 176 138 134

**Table 2:** Upper limits (3 $\sigma$ confidence level) on the Equivalent Width of an emission line (Gaussian model), at various energies and widths.
E (keV)	6	6.4	6.7	7
$\sigma$ (keV)	U.L. (eV)	U.L. (eV)	U.L. (eV)	U.L. (eV)
0	173	117	37	97
0.1	209	130	48	99
0.2	255	150	71	91
0.3	262	161	90	97
0.4	254	173	113	111
0.5	235	176	138	134

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations, data reduction and spectral analysis
	3 Discussion and conclusions
	References