A graph showing the montly mean <a href="https://en.wikipedia.org/wiki/zonal" class="extiw" title="w:zonal">zonal</a> <a href="https://en.wikipedia.org/wiki/precipitation" class="extiw" title="w:precipitation">precipitation</a> as a function of latitude.
NASA
<a rel="nofollow" class="external autonumber" href="http://gmao.gsfc.nasa.gov/research/merra/sci_archive/GPCP/plot_GP_zonal_all.gif">[1]</a>