Flux calibrated spectra from the 12 epochs taken with ESPaDOnS across the optical regime (4000 − 7100 Å). Notable emission and absorption lines discussed in this study are identified with their species name. Regions highly contaminated by telluric emission are also indicated. The spectrum in black (17-06-2011) represents the night of observations that we calibrated with simultaneous photometry. The other 11 nights were flux calibrated as described in Sect. 2.2.