Table 2
Variability indices at 1.4 and 4.8 GHz for flat- and steep-spectrum sources.
| Variab. | Flat | Variab. | Steep | |||
| index | 1.4 GHz | 4.8 GHz | index | 1.4/4.8 GHz | ||
|
|
||||||
| <10% | 0.69 | 0.60 | <4% | 0.70 | ||
| 10–20% | 0.22 | 0.23 | 4–20% | 0.30 | ||
| 20–30% | 0.07 | 0.12 | ||||
| 30–50% | 0.02 | 0.05 | ||||
Notes. Columns 2, 3, and 5 give the fractions of sources that show the corresponding variability index in Cols. 1 and 4. For steep-spectrum sources there is no significant difference between the variability indices at 1.4 and 4.8 GHz. The estimated values are from Tingay et al. (2003, see text).
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