period,ad_set_id,delivery_status,optimization_event,currency,spend,impressions,reach,link_clicks,results
2026-09-01/2026-09-07,cold1,Active,Purchase,USD,1000,100000,50000,2000,50
2026-09-08/2026-09-14,cold1,Learning limited,Purchase,USD,1000,80000,20000,800,25