text: As indicated in the figure below, this undertaking revealed that the mean annual SSTs of the 80-year periods centered on AD 990 (MCA) and AD 50 (RWP) were 0.8??C and 1.4??C higher than the mean SST during the AD 1994-2005 portion of the Current Warm Period (CWP). Likewise, they also report that the mean summer SSTs of the MCA and RWP were, respectively, 0.2 and 1.0??C higher than that of the CWP, while the mean winter SSTs of the MCA and RWP were, respectively, 1.3 and 1.8??C higher than that of the CWP.