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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: J Agric Biol Environ Stat. 2014 Mar 1;19(1):57–81. doi: 10.1007/s13253-013-0157-7

Figure 1.

Figure 1

(a) Contour plot of the 2-dimensional kernel regression fit of NEE on PAR and TEMP, (b) Slices from the kernel regression fit at three quartiles of the observed temperature values.