Notes. r_s and v_c,model have the same meaning as in Table 2. N_data: number of measurements for each shell; v_c,eq(18): the mean of values derived from the approximative maximal LOS velocities given by Eq. (18) with its mean square deviation; v_c,slope: a value derived from linear regression using the slope of the LOSVD intensity maxima given by Eq. (21) and its standard error (see also Fig. 14); v_c,fit: a value derived by fitting a pair of v_c and v_s in the approximative LOSVD given by Eq. (15) (Sect. 5, point 2 and Fig. 13); v_{c,slope(MK98)}: the mean of values derived from the slope of the LOSVD intensity maxima given by Eq. (21) with its standard error (see also Fig. 14). In the equation, however,  △ v_los is substituted with the distance between the two outer peaks of the LOSVD intensity maxima in order to mimic the measurement as originally proposed by MK98 for double-peaked profile. The quantities with the superscript SS correspond to the subsample, where only measurements with two discernible inner peaks in the LOSVD are used.