Hall and Pedersen conductances derived from EISCAT Common Program 1 (CP-1) data during half a solar cycle are presented. The data set consists of 9 quiet summer days with 10.7-cm solar flux (Sa) ranging from solar minimum (Sa=74) to solar maximum (Sa=248) conditions. The solar flux and the solar zenith angle (&khgr;) dependence of Hall (∑H) and Pedersen (∑P) conductances are well represented by &Sgr;H=S0.53a(0.81 cos &khgr;+0.54 cos1/2 &khgr;) and &Sgr;P=S0.49a(0.34 cos &khgr;+0.93 cos1/2 &khgr;) respectively. The present results are in good agreement with the theoretical model calcualtions by Rasmussen et al. [1988> for solar minimum conditions. For higher solar activity levels, however, our model gives consistently higher conductance values than older models. ¿ American Geophysical Union 1993