It seems so VP. There have been manipulations identified already but without the complete code it will be difficult to pin down. (For instance, in the subfolder "osborn-tree6\mann\oldprog," there’s a program (Calibrate_mxd.pro) that calibrates the MXD data against available local instrumental summer (growing season) temperatures between 1911-1990, then merges that data into a new file. That file is then digested and further modified by another program (Pl_calibmxd1.pro), which creates calibration statistics for the MXD against the stored temperature and "estimates" (infills) figures where such temperature readings were not available. The file created by that program is modified once again by Pl_Decline.pro, which "corrects it" – as described by the author -- by "identifying" and "artificially" removing "the decline." <BR itxtvisited="1">But oddly enough, the series doesn’t begin its "decline adjustment" in 1960 -- the supposed year of the enigmatic "divergence." In fact, all data between 1930 and 1994 are subject to "correction."<BR itxtvisited="1">http://www.americanthinker.com/2009/11/crus_source_code_climategate_r.html<BR itxtvisited="1">