detected in all observations with an average XRT count rate of 0.0037 count s$^{-1}$. We extracted a light curve binned at the duration of each individual observation, finding evidence for small deviations from the average count rate in 5 of the 23 observations, though no evidence for significant spectral variability could be seen in the standard *Swift hardness ratio ((1.5–10 keV)/(0.3–1.5 keV))*. We next extracted a combined spectrum from the *Chandra* position of N4088–X1, excluding the 5 observations in which evidence for variability was seen, giving a total exposure time of 76 ks.

[cccc]{} Date & Obsid & Exp. time (s) & Spectrum\
2009-04-15 & 00031401001 & 1996 & Y\
2009-04-17 & 00031401002 & 830 & Y\
2009-04-19 & 00031401003 & 3946 & Y\
2009-04-21 & 00031401004 & 2670 & Y\
2009-04-25 & 00031401005 & 2712 & Y\
2009-05-10 & 00031401006 & 4306 & Y\
2009-05-16 & 00031401007 & 6045 & Y\
2009-07-04 & 00031401008 & 3824 & Y\
2009-07-05 & 00031401009 & 5957 & Y\
2009-07-15 & 00031401011 & 3930 & N\
2009-07-16 & 00031401012 & 8963 & N\
2009-07-19 & 00031401013 & 4863 & Y\
2009-07-19 & 00031401014 & 6049 & N\
2009-07-26 & 00031401015 & 4668 & 