Upper panel: comparison of flare factors (see text for its definition), lines: from López-Corredoira et al. (2002) from red giants (LC02), Yusifov (2004) from pulsars (Y04), Kalberla et al. (2014) from HI gas (K14), López-Corredoira & Molgó (2014) from SDSS-SEGUE data (LC14), and our study (dashed lines). Crosses are the data of Alard (2000) from 2MASS for three ranges of longitudes: ℓ = 66.0°, 180° and 240°. The values of h_z(R_Sun) considered for each author were 0.285, 0.580, 0.200, 0.240 and 0.250 pc, respectively. Lower panel: flare factor for each age class bin in our best fit model from sim-2.