On its first day as the front-month, gas futures for October delivery were down 1.5 cents, or 3.4%, to $4.237 per million British thermal units (mmBtu)
Front-month gas futures for July delivery on the New York Mercantile Exchange (NYMEX) rose 3.8 cents, or 1.2%, to $3.229 per million British thermal units (mmBtu).
US pipeline exports to Mexico averaged 6.7 bcfd so far in June, putting them on track to top May's 6.2-bcfd record.