Information for pair0046:

Mean daily relative humidity near surface (.995 sigma level) 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: %

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


ground truth:
x --> y
