Table 2: Relative line intensities of strong nebular UV lines, as measured from HST STIS long-slit spectra at off-star positions (southern nebular filaments). These values are used for correcting the IUE spectra for nebular contamination.

N  IV	1240.13	264
Si  IV	1393.76	92
Si  IV	1402.77	46
N  IV	1483.33	360
C  IV	1548.19	260
C  IV	1550.76	130
He  II	1640.43	1000