HR diagram of 332 selected DA with S/N > 10. The red stars represent 32 DA DWD candidates, while the blue point represents the only ELM DA DWD candidate. All of these 33 sources exhibit significant RV variability. The cooling tracks were derived from the DA synthetic colors tables at astro.umontreal.ca/~bergeron/CoolingModels/. Additionally, the cooling tracks are for single stars, while our candidates are binaries with a higher overall luminosity. Consequently, they fall in the region of the cooling tracks corresponding to lower masses than the ones in Section 4.1.