PJM is performing system maintenance to Markets Gateway and Stale Data in production on Tuesday, Jan. 31, from 3-5 p.m. EPT (1500- 1700 hours). This maintenance will cause an outage up to two hours to Markets Gateway and Stale Data to Data Miner, Data Snapshot, PJM Now, and LMP postings on Data Viewer. In addition, there could be stale data on the Markets and Operations page.