The IPCC TAR says of the MWP that "the posited Medieval Warm Period appears to have been less distinct, more moderate in amplitude, and somewhat different in timing at the hemispheric scale than is typically inferred for the conventionally defined European epoch. The Northern Hemisphere mean temperature estimates of , (Mann et al. 1999), and show temperatures from the 11th to 14th centuries to be about 0.2°C warmer than those from the 15th to 19th centuries, but rather below mid-20th century temperatures".