(24)When determining the importance of the various indicators corresponding to a given pillar, aggregation within pillars should be done by means of an arithmetic weighted average of the individual indicators. As regards the calculation of final composite risk indicator corresponding to each institution, to avoid compensation effects between pillars whereby an institution performing moderately well under several pillars and very poorly under another would generally be given a middle score pursuant to an arithmetic average of the different pillars, such calculation should be based on the geometric weighted average of the individual pillars.