“…In this and in our next, accompanying paper (Szalai and Szarka 2008a, discussing nonlinear and focused arrays) we present a complete list of parameter sensitivity maps of all those geoelectric arrays, which dispose at all parameter sensitivity maps. For this analysis the approximately one hundred arrays, collected by Szalai and Szarka (2008b) were taken into account. In this way, these two papers together characterise all surface geoelectric arrays from a special point of view.…”