format
A data.frame containing thirteen columns with year
and twelve months of temperature data in degree Celsius.source
Mitchell TD, Carter TR, Jones PD, Hulme M, New M, et
al. (2004) A comprehensive set of high-resolution grids of monthly
climate for Europe and the globe: the observed record (1901-2000)
and 16 scenarios (2001-2100). Tyndall Centre for Climate Change
Research Working Paper 55, 25.