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Table 2:

VLA observation log for XTE J1818-245 indicating the calendar dates, MJD and INTEGRAL revolutions during which the source was observed, together with flux densities at four radio frequencies, the radio spectral index $\alpha $, errors and the spectral X-ray state.
Date Time Rev. $S_{\rm 1.4~GHz}$ $S_{\rm 4.9~GHz}$ $S_{\rm 8.4~GHz}$ $S_{\rm 15~GHz}$ Spectral index $\alpha $ X-ray state
(yyyy-mm-dd) (MJD)   (mJy) (mJy) (mJy) (mJy) ( $S_\nu\propto\nu^{\alpha}$)  
2005-08-20 53 602.10 347   7.13 $\pm$ 0.07 (i, 3.5$\sigma $)       SIMS
2005-08-21 53 603.19 348   27.33 $\pm$ 0.06 (d, 7.7$\sigma $)       SIMS
2005-08-23 53 605.02 349 1.5 $\pm$ 0.4 1.49 $\pm$ 0.07 2.3 $\pm$ 1.0 (o, 25$\sigma $) <0.83 ${\sim}0$ SIMS
2005-08-24 53 606.19 349     0.60 $\pm$ 0.04     SIMS
2005-08-27 53 609.19 350   1.12 $\pm$ 0.07       SIMS
2005-08-29 53 611.19 351 9.3 $\pm$ 0.5 (d, 3.1$\sigma $) 3.72 $\pm$ 0.08 2.27 $\pm$ 0.07   $-0.8\pm0.1$ SIMS
2005-09-04 53 617.09 353 <1.22 0.77 $\pm$ 0.08 0.40 $\pm$ 0.09   $-1.2\pm0.5$ HSS
2005-09-11 53 624.11   <0.86 <0.23 <0.17     HSS
2005-09-18 53 631.15     <0.17       HSS
2005-09-23 53 636.12     <0.13       HSS
2005-10-06 53 649.02     <0.22       HSS
2005-10-13 53 656.02     <0.16       SIMS
2005-10-17 53 660.84     <0.23       SIMS
2006-02-26 53 792.51     <0.23       Unknown
Note:
The large errors at 1.4 GHz are due to bright sources in the primary beam (field of view). Upper limits are at the 3$\sigma $ level. The large errors at 8.4 GHz during these observations (Rev. 349) reflect the variability of the source (see text). For the runs where variability is present, we quote in parentheses whether the source flux density is increasing (i), decreasing (d) or oscillating (o), together with the significance of this variability.

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