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Table 2
Observation log of spectra analyzed in our study.
| Star | Instrument (Id.) | Observation | texp |
| start date (UT) | (ks) | ||
| mm-dd-yyyy | |||
|
|
|||
| LB 1919 | EUVE | 04-16-1994 | 166 |
| FUSE LWRS | 05-03-2001 | 33 | |
| IUE SWP 52808 | 11-15-1994 | 4.5 | |
| Chandra LETG/HRC-S | 02-02-2006 | 111 | |
| GD 246 | EUVE | 08-08-1994 | 14 |
| FUSE LWRS | 11-12-2000 | 1.5 | |
| FUSE MDRS | 07-14-2001 | 24 | |
| HST STIS/E140H | 11-20-1998 | 2.4 | |
| IUE SWP 40467 | 12-27-1990 | 0.33 | |
| IUE LWP 19485 | 12-27-1990 | 0.84 | |
| Chandra LETG/HRC-S | 01-14-2000 | 40 | |
| PG 1520+525 | Chandra LETG/HRC-S | 04-04-2006 | 142 |
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