<a href="https://en.wikipedia.org/wiki/Carpet_plot" class="extiw" title="w:Carpet plot">w:Carpet plot</a> of the ambient temperature in Augsburg; generated from data of the Test Reference Year TRY with a VBA-macro and gnuplot
<a href="//commons.wikimedia.org/w/index.php?title=User:Johopf&amp;action=edit&amp;redlink=1" class="new" title="User:Johopf (page does not exist)">Johopf</a>
CC BY 3.0
Eigenes Werk (own work) using Excel &amp; VBA <a rel="nofollow" class="external free" href="http://www.johannes-hopf.de/2009/02/carpet-plot-version-11-beta/">http://www.johannes-hopf.de/2009/02/carpet-plot-version-11-beta/</a>