Can anyone explain to me the meaning of the following email from Hughes to Mann, dated July 29, 1997, archived at Mann’s FTP site at ftp://holocene.evsc.virginia.edu/pub/MBH98/TREE/VAGANOV/ORIG/malcolm_29-JUL-97.
As follow-up, the site arge030 was listed in the original SI as being used in MBH98, but was not actually used in MBH98 calculations evidenced at Mann’s FTP site. We complained about this and other inconsistencies to Nature in November 2003, leading to the Corrigendum by Mann et al. in July 2004. The Corrigendum listed arge030 as one of 35 series in the original SI, which was not actually used in calculations.
The Corrigendum stated that the discrepancies resulted from the application of additional quality control measures i.e. the excluded series were not "conservatively standardized" or their standardization methods were not known to the authors in 1997. I’ve checked this supposed explanation and it can be shown not to be accurate. I’ll post on this on another occasion.