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Table 2
Mrk 421 soft X-ray fluxes and spectral parameters from the eight Swift/XRT datasets simultaneous to MAGIC-I observations.
| Obs. ID | Start | Obs. | F2−10 keV | α1 | Ebreak | α2 | f0 |  /d.o.f. |
| Time (UT) | Time | erg/cm2/s | keV | |||||
| yyyy-mm-dd hh:mm | ks | [× 10-12] | ||||||
|
|
||||||||
| 00030352041 | 2008-01-08 02:30 | 2.0 | 280 | 2.31(0.03) | 1.20(0.09) | 2.58(0.03) | 0.242(0.003) | 1.34/163 |
| 00030352042 | 2008-01-09 04:04 | 2.0 | 283 | 2.28(0.03) | 1.05(0.10) | 2.60(0.03) | 0.257(0.005) | 1.30/170 |
| 00030352044 | 2008-01-10 02:27 | 2.3 | 284 | 2.32(0.02) | 1.10(0.10) | 2.57(0.02) | 0.245(0.003) | 1.59/178 |
| 00030352053 | 2008-01-16 03:21 | 1.2 | 345 | 2.19(0.04) | 1.24(0.18) | 2.45(0.04) | 0.242(0.004) | 1.16/122 |
| 00030352055 | 2008-01-17 03:29 | 0.8 | 311 | 2.21(0.03) | 1.97(–0.18/+0.4) | 2.75(–0.09/+0.19) | 0.243(0.003) | 1.33/101 |
| 00030352068 | 2008-02-11 03:40 | 1.9 | 587 | 2.19(0.01) | 2.43(0.2) | 2.57(0.06) | 0.372(0.002) | 1.76/215 |
| 00030352083 | 2008-04-02 00:42 | 0.9 | 474 | 2.09(0.02) | 2.86(0.33) | 2.51(–0.08/+0.15) | 0.260(0.003) | 1.47/130 |
| 00030352086 | 2008-04-03 21:59 | 1.2 | 961 | 1.95(0.02) | 2.37(–0.16/+0.28) | 2.33(0.06) | 0.438(0.003) | 1.48/210 |
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