Within the 1990 report, the LIA is taken to be global in extent but not the MWP. Climate over the last 1000 years is mentioned very briefly in the SPM of the 1990 report. The MWP is not mentioned at all, and the LIA described by "probably fluctuated by little more than 1°C. Some fluctuations lasted several centuries, including the LIA which ended in the [19th century] and which appears to have been global in extent". The MWP is mentioned in the executive summary to chapter 7, as "MWP around 1000 AD (which may not have been global)".