86In that regard and in the second place, in order to exercise their discretion properly, co-legislators must take into account, during the legislative procedure, the available scientific data and other findings that became available, including scientific documents used by the Member States during Council meetings that the Council itself does not have (see, to that effect, judgment of 21 June 2018, Poland v Parliament and Council, C‑5/16, EU:C:2018:483, paragraphs 160 to 163).
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