(a) Comparison of L_bol values from this work and different estimators. Red circles, blue squares, and green triangles denote the L_bol values derived by using Pβ, Pα, and L₁₅, respectively. The dashed line denotes a line where the L_bol values are identical. (b) M_BH values from this work versus those from different methods. Red circles and blue squares represent the M_BH values measured with Pβ and Pα lines, respectively. Green triangles denote the M_BH values estimated from L₁₅ and the Balmer line width. The dashed line represents a line for which the M_BH values are identical.