In the article "Pennsylvania Marcellus Shale Gas Production Jumps" (see Shale Daily, Aug. 17), NGI's Shale Daily incorrectly listed the well counts for the major producers in Pennsylvania by including wells that had been permitted, but not yet drilled. In actuality, Chesapeake Energy Corp. produced from 110 wells, not 1,286 wells. Talisman Energy Inc. produced from 185 wells, not 684 wells. Cabot Oil & Gas Corp. produced from 117 wells, not 261 wells. Range Resources Corp. produced from 240 wells, not 632 wells, and EQT Corp. produced from 49 wells, not 355 wells. NGI's Shale Daily regrets the error.