Since the initial interpolation results of the 4000 node set seemed to be the smallest set with adequate results, further investigation into timings and accuracy of the 4000 node set as a function of the input parameters, NQ, NW, and NR was performed.  A netCDF file was created of the difference in values at each node between the interpolated values and the real values.

The best results for time and accuracy are shown below. This example shows that adequate interpolation can be accomplished for a 5-D space with only 4% of the known nodes available in approximately 12 minutes.

100,000 node
True set
Min Error = -0.065705
Max Error = 0.06624
4,000 node set
NQ=50 NW=32 NR=3
Time: 11.87 CPU min.
Min Error = -0.0575986
Max Error = 0.065174
Difference of true
set and 4,000 node set
Max Error   = 0.047975
Mean Error = 0.000490568
Norm Error = 0.0017077