FIGURE 3. Meaningless data?
From the following article:
Peter Murray-Rust
Nature 451, 648-651(7 February 2008)
doi:10.1038/451648a
A Keeling curve plots the concentration of carbon dioxide in the atmosphere above Mauna Loa, Hawaii, since 1958. Although humans can obtain much information from this graph, it is meaningless to computers unless identifiers are added that allow the data to be interpreted electronically.