Histogram, in grey, of the periods published in the DR2 catalogue of LPV candidates. The axis has been limited to P < 2000 d for bettter visibility. There are 24 additional sources with periods above this limit. In red we show the subset containing Mira candidates with G_BP  − G_RP ecolours larger than 4 mag and G amplitudes larger than 1 mag as measured by the 5–95% quantile range QR₅ of the G light curve.