773In accordance with points 20 and 22 of the Guidelines, the Commission in this case examined and took into account, when setting that proportion, various factors relating to the nature of the infringement, the combined market share of all the undertakings concerned, the geographic scope of the infringement and whether the infringement had been implemented, as is apparent from recitals 454 to 459 to the contested decision, and there was no examination of the restrictive effects on competition of the practice in question.