Right now I am using this data: https://data.giss.nasa.gov/gistemp/station_data/ https://data.giss.nasa.gov/gistemp/station_data/ While my motivation is to dem

Right now I am using this data: https://data.giss.nasa.gov/gistemp/station_data/ https://data.giss.nasa.gov/gistemp/station_data/ While my motivation is to demonstrate matrix decomposition (see: https://twitter.com/pmigdal/status/902563470125789188 https://twitter.com/pmigdal/status/902563470125789188), I wanted to use a credible source. See also a few threads on Open Data Stack Exchange (e.g. https://opendata.stackexchange.com/questions/1546/how-might-i-go-about-visualising-historical-temperature-csv-data https://opendata.stackexchange.com/questions/1546/how-might-...).