Table 3: Equivalent widths, FWHM and fluxes of the strongest lines.
Line EW(Å) FWHM(Å) Flux(*) EW(Å) FWHM(Å) Flux(*)
  August 1998 July 2004
H$_\delta$ 2.9(3) 7.2 56 - - -
H$_{\gamma}{ }$ 3.9(2) 7.5 73 4.2(2) 7.3 136
HeI 4471 1.0(1) 7.5 17 0.9(1) 6.2 30
CIII-NIII(+) 2.0(1) 21.3 36 2.3(2) 26.9 71
HeII 4686(+) 5.9(1) 10.6 110 5.7(2) 10.5 182
H$_{\beta } $ 6.1(3) 8.5 109 6.4(3) 8.0 201
HeII 5411 1.5(3) 12.8 23 1.4(2) 15.2 42
HeI 5875(+) 2(2) 8.1 32 2.0(2) 7.9 55
H$_{\alpha }{ }$ 16.5(4) 10.7 252 - - -
Errors bars on last digit in parentheses.
FWHM: corrected for instrumental resolution (typical errors of 0.6 Å in 1998 and 0.3 Å in 2004).
* Line flux in units of 10-16 $\rm erg\;cm^{-2}~s^{-1}$ are indicative because of marginal photometric conditions.
(+) Measurements derived from Gaussian fits.

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