Top panel: comparison between the SDSS- and SSS-WDLFs. Absolute values of the SSS-WDLF have been corrected for incompleteness by normalization to the SDSS-WDLF total number of stars in the range 10 < M_Bol < 13 (small shaded area). Open squares show the averaged WDLF constructed by merging the WDLFs derived by Harris et al. (2006), Krzesinski et al. (2009), and Rowell & Hambly (2011), see text for details. The gray area within 3 < M_Bol < 9 corresponds to the region used for the χ²-like test. Bottom panel: differences between the SDSS- and SSS-WDLF relative to their own quoted error bars at each magnitude bin (). Values of δ_i > 1 indicate significant discrepancies between the SDSS-WDLF and the SSS-WDLF.