Transportadora de Gas del Sur S.A. Announced earnings results for the first quarter ended March 31, 2021. For the first quarter, the company announced total revenue was ARS 16,670 million compared to ARS 17,364 million a year ago. Operating income was ARS 8,597 million compared to ARS 7,252 million a year ago. Net income was ARS 3,909 million compared to ARS 4,873 million a year ago.