1. The Commission may, by decision, impose on undertakings or associations of undertakings periodic penalty payments not exceeding 5 % of the average daily turnover in the preceding business year per day and calculated from the date appointed by the decision, in order to compel them:

(a) to put an end to an infringement of Article 81 or Article 82 of the Treaty, in accordance with a decision taken pursuant to Article 7;

(b) to comply with a decision ordering interim measures taken pursuant to Article 8;

(c) to comply with a commitment made binding by a decision pursuant to Article 9;

(d) to supply complete and correct information which it has requested by decision taken pursuant to Article 17 or Article 18(3);

(e) to submit to an inspection which it has ordered by decision taken pursuant to Article 20(4).

2. Where the undertakings or associations of undertakings have satisfied the obligation which the periodic penalty payment was intended to enforce, the Commission may fix the definitive amount of the periodic penalty payment at a figure lower than that which would arise under the original decision. Article 23(4) shall apply correspondingly.