Astronomy & Astrophysics

Table 1: Observational parameters and results.
Table 2: Relationship parameters for $\mbox {log(X-ray)} = \kappa \cdot {\rm log(UV)} + c$ .
Table 3: Neupert relationship parameters: $\mathcal{L}_{\rm x} = 10^c \cdot \mathcal{E}_{\rm uv}^\kappa$ .