When one contrasts the extraordinary MBH claims of robustness of their reconstruction with the admitted non-robustness of this reconstruction to the PC4 of the North American tree ring network, it is interesting to examine the first 5 PC series in the CENSORED file at Mann’s FTP site. These are plotted in the following figure.
These PC series have been calculated from the 50 non-bristlecone pine series and obviously there is no 20th century hockey stick shaped series among them. These PC series have presumably been calculated with Mann’s flawed PC method, but even this method could not mine a hockey stick shape without the bristlecones. This shows about as vividly as one could imagine that the hockey stick is made out of bristlecone pine.