Luminosity functions (LFs). The left panel shows three histograms depicting the LFs for the known MW GC system by Harris (1996) (2010 edition), using the dashed blue line, for the GCs analyzed in this work and listed in Table 1, using a dashed orange line and the sum of the two mentioned distributions in the green line. In the right panel, we show the LFs using the KDE technique for the three samples.