**Table 4:** Derived velocity dispersion for different portions of the spectra of W30 in NGC 7252. All values are given in km s^-1.
Mg^a	Fe^b	Full^c	Adopted
24.7	30.3	28.0	27.5 $\pm$ 2.5

^a: Just the Mg triplet, from 5156 Å to 5187 Å.
^b: Red-ward of the Mg triplet, mainly dominated by Fe lines, from 5218 Å to 5351 Å.
^c: The full spectrum used, from 5155 Å to 5324 Å.