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Table 4
X-ray variability for different subsamples of X-ray sources.
| Sample | Number of sources | Fraction of variable sources (KS Test 95%) | Number of flares per source |
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| All X-ray sources | 1021 | 0.34 ± 0.02 | 0.16 ± 0.02 |
| Class III X-ray sources | 285 | 0.34 ± 0.03 | 0.19 ± 0.02 |
| Class II X-ray sources | 149 | 0.41 ± 0.05 | 0.27 ± 0.04 |
| Accreting Class II X-ray sources | 50 | 0.40 ± 0.09 | 0.30 ± 0.08 |
| Not accreting Class II X-ray sources | 77 | 0.41 ± 0.07 | 0.27 ± 0.06 |
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