Dist. LEXIS 49069. Another new matrix As described above, in 2019, the U.S. Court of Appeals for the District of Columbia Circuit rejected the new USAO matrix based on the ALM survey data. DL v. District of Columbia, 924 F.3d 585 (D.C. Cir. 2019). Thereafter, the USAO stated that it was working with other parties to develop a revised matrix for complex federal litigation. Some decisions from non-D.C. courts The Court of Appeals for the Third Circuit affirmed a fee award based on the LSI-Adjusted Laffey Matrix for a Washington, D.C., law firm litigating a case in New Jersey. Interfaith Community Organization v. Honeywell International, Inc., 426 F.3d 694 (3rd Cir. 2005)("In updating the matrix to account for inflation from 1989-2003, ICO relied on the legal services component of the nationwide Consumer Price Index ('the Legal Services Index'), a measure of inflation in the cost of legal services maintained by the Bureau of Labor Statistics."). The Court of Appeals noted that the District Court "reviewed both indices [the USAO Laffey Matrix and the LSI-Adjusted Laffey Matrix] and decided that [the LSI-Adjusted Laffey Matrix] represented a better measure of prevailing rates in Washington, DC. The Third Circuit issued a similar affirmance of a fee award based on the LSI-Adjusted Laffey Matrix in ICO v. Honeywell International, Inc., 726 F. 3d 744 (3d Cir. 2013). The Fourth Circuit expressly disapproved reliance on the Laffey Matrix in Robinson v. Equifax Information Services, LLC, 560 F.3d 235 (4th Cir. 2009), requiring instead that fee awards be based on prevailing market rates established by evidence. Some California federal courts have adjusted the Laffey Matrix upwards based upon the higher costs of living in Los Angeles and other California cities. In Re HPL Technologies, Inc. Securities Litigation, 366 F.Supp.2d 912, 921 (N. Dist. Cal. 2005). See also “It is the practice of the undersigned judge, however, to rely on official data to determine appropriate hourly rates, not on an attorney's self-proclaimed rates or declarations regarding hourly rates charged by law firms. One reliable official source for rates that vary by experience levels is the Laffey matrix used in the District of Columbia.” Garnes v. Barnhardt, 2006 U.S. Dist. LEXIS 5938 (N. Dist. Cal. 2006). The inflation indices The USAO Laffey Matrix is adjusted based on the CPI. The LSI-Adjusted Laffey Matrix is adjusted based on the LSI. The new USAO matrix, which was rejected by the