Table 5: Equivalent widths of H$\gamma $ and H$\delta $ absorption lines in LSB regions.

Region
Distancea Apertureb   EW(H$\delta $)c,d EW(H$\gamma $)c,d EW(H$\delta $) $^{c,e}_{\rm B\&A}$ EW(H$\gamma $) $^{c,e}_{\rm B\&A}$
a -12.4   2.0 $\times$ 7.6   9.0: $\pm$ 0.6 ... 9.8: $\pm$ 0.6 ...
b -5.8  2.0 $\times$ 4.1   8.6 $\pm$ 0.4 6.6 $\pm$ 0.5 8.9 $\pm$ 0.4 6.7 $\pm$ 0.4
d   8.0 2.0 $\times$ 5.5   7.3 $\pm$ 0.5 5.3 $\pm$ 0.5 7.8 $\pm$ 0.5 5.0 $\pm$ 0.5
f 23.9 2.0 $\times$ 4.1   6.2 $\pm$ 0.7 5.1 $\pm$ 0.9 6.6 $\pm$ 0.7 5.1 $\pm$ 0.7
g 28.4 2.0 $\times$ 4.8   7.2 $\pm$ 0.4 4.8 $\pm$ 0.9 7.8 $\pm$ 0.4 5.1 $\pm$ 0.4
h 34.2 2.0 $\times$ 6.9   7.4 $\pm$ 0.5 5.3 $\pm$ 0.5 7.6 $\pm$ 0.5 7.4 $\pm$ 0.5
a Distance from region c in arcsec. Negative and positive values correspond to regions located respectively to southwest and northeast from region c.
b Aperture x $\times$ y where x is the slit width and y the size along the slit in arcsec.
c In Å.
d Equivalent widths are measured using Gaussian fitting of the lines.
e Equivalent widths are obtained within the same wavelength intervals $\lambda_0 = 4318{-}4364$ Å and 4082-4124 Å, respectively, for H$\gamma $ and H$\delta $ as those used by Bica & Alloin (1986a).

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