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Table 1
Observing dates (mid-time of exposure) and exposure times of the spectra of BD+29°3070, BD+34°1543 and Feige 87.
| BD+29°3070 | BD+34°1543 | Feige 87 | |||
| BJD | Exp. | BJD | Exp. | BJD | Exp. |
| –2 450 000 | s | –2 450 000 | s | –2 450 000 | s |
|
|
|||||
| 5029.4643 | 1800 | 5166.5252 | 700 | 5028.4488 | 1800 |
| 5040.4568 | 1800 | 5218.5730 | 600 | 5028.4703 | 1800 |
| 5055.4675 | 1200 | 5238.5505 | 900 | 5028.4917 | 1800 |
| 5060.3980 | 1210 | 5238.5664 | 900 | 5251.7145 | 890 |
| 5321.6137 | 1500 | 5238.5775 | 900 | 5251.7247 | 390 |
| 5351.4739 | 1500 | 5240.5316 | 1800 | 5341.5722 | 1603 |
| 5425.4024 | 1600 | 5475.6918 | 900 | 5351.4184 | 2700 |
| 5619.7185 | 1500 | 5502.7281 | 900 | 5371.4175 | 2700 |
| 5638.6611 | 1700 | 5507.6955 | 900 | 5566.7810 | 2700 |
| 5648.6732 | 1500 | 5553.5767 | 900 | 5616.6402 | 2100 |
| 5658.6816 | 1600 | 5614.5668 | 900 | 5622.7074 | 720 |
| 5670.5225 | 1500 | 5621.5560 | 800 | 5622.7317 | 2000 |
| 5678.5495 | 1940 | 5658.3476 | 594 | 5656.6032 | 911 |
| 5686.5327 | 1800 | 5807.7326 | 600 | 5658.5870 | 1210 |
| 5701.5513 | 1750 | 5844.6708 | 900 | 5660.6107 | 704 |
| 5718.4729 | 2000 | 5861.7131 | 900 | 5663.5411 | 1200 |
| 5745.4261 | 1950 | 5887.6807 | 900 | 5666.5345 | 1800 |
| 5761.5685 | 1800 | 5932.5869 | 900 | 5937.7967 | 1800 |
| 5772.5841 | 1950 | 5942.6039 | 1200 | 5964.6900 | 3400 |
| 5778.4452 | 1700 | 5949.5190 | 900 | 5965.5843 | 2400 |
| 5795.3894 | 1500 | 5954.4967 | 1000 | 5968.6517 | 1800 |
| 5808.3721 | 1500 | 5965.4262 | 1100 | 5990.7225 | 1800 |
| 5829.3696 | 1500 | 5968.6346 | 900 | 6017.6145 | 1500 |
| 5999.7619 | 900 | 5978.5722 | 1050 | 6042.4773 | 1800 |
| 6027.6990 | 1500 | 6007.5012 | 820 | 6060.4147 | 1800 |
| 6049.5559 | 1500 | 6043.4301 | 900 | 6064.5674 | 1800 |
| 6082.5484 | 1150 | 6058.3969 | 1500 | 6066.4652 | 1800 |
| 6135.4325 | 800 | 6066.3756 | 1800 | 6068.4574 | 1800 |
| 6135.4423 | 800 | 6068.3894 | 1250 | 6082.4504 | 1800 |
| 6139.4292 | 1400 | 6069.3668 | 900 | 6138.4374 | 1800 |
| 6145.4352 | 1000 | 6141.4016 | 1800 | ||
| 6196.3415 | 1800 | ||||
| 6301.7679 | 1800 | ||||
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