| Age | Instrument | 0.5-2.0 keV Flux | Pile-up |
| [days] | [10-13 erg cm-2 s-1] | correction | |
| 1448 | ROSAT HRI | 0.091  0.113 |
- |
| 1645 | ROSAT PSPC | 0.204 0.057 |
- |
| 1872 | ROSAT PSPC | 0.250 0.057 |
- |
| 2258 | ROSAT PSPC | 0.363 0.068 |
- |
| 2408 | ROSAT PSPC | 0.431 0.091 |
- |
| 2715 | ROSAT HRI | 0.442 0.147 |
- |
| 3013 | ROSAT HRI | 0.544 0.079 |
- |
| 3350 | ROSAT HRI | 0.69 0.10 |
- |
| 3570 | ROSAT HRI | 0.74 0.10 |
- |
| 3640 | ROSAT PSPC | 1.01 0.09 |
- |
| 3650 | ROSAT HRI | 0.93 0.11 |
- |
| 3760 | ROSAT HRI | 0.70 0.14 |
- |
| 3950 | ROSAT HRI | 1.11 0.12 |
- |
| 4609 | Chandra ACIS | 1.68 0.06 |
1.035 |
| 4711 | Chandra ACIS | 1.81 0.07 |
1.038 |
| 4712 | XMM EPIC-pn | 1.76 0.07 |
- |
| 5038 | Chandra ACIS | 2.74 0.03 |
1.057 |
| 5156 | XMM EPIC-pn | 2.77 0.08 |
- |
| 5176 | Chandra ACIS | 3.12 0.07 |
1.065 |
| 5407 | Chandra ACIS | 4.15 0.05 |
1.087 |
| 5561 | Chandra ACIS | 4.91 0.07 |
1.102 |
| 5791 | Chandra ACIS | 6.79 0.07 |
1.142 |
| 5918 | XMM EPIC-pn | 8.10 0.09 |
- |
| 5980 | Chandra ACIS | 8.46 0.09 |
1.177 |
| 6158 | Chandra ACIS | 10.32 0.11 |
1.216 |
| 6359 | Chandra ACIS | 13.05 0.78 |
1.136 |
| 6533 | Chandra ACIS | 19.64 0.79 |
1.205 |
| 6716 | Chandra ACIS | 24.35 1.22 |
1.255 |