Information for pair0044:

Mean Daily pressure at surface on a 144x73 grid (2.5 degree) of day 50 and day 51 of year 2000.

x: year 2000, day 50
y: year 2000, day 51

units: Pascal

Data source:
http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.surface.html


ground truth:
x --> y