Produce test data that includes TES

[IanMayo]

Our current test data doesn't allow for TES in the acoustic propagation.

This means that there is very little variety in the 2-d heatmap of TES.

We should generate an algorithmic way of generating estimated TES - then use this in the Asset simulator.

[IanMayo]

Note: if we wish to digitise the curves in the TES map there is an online digitiser here:
http://arohatgi.info/WebPlotDigitizer/

One way of doing this would be to produce a series of polygons. Each polygon would know the value for permutations inside it.

We would then use JTS to loop through the regions to determine which one contains our data.

[IanMayo]

Update. We have a python script to reverse-engineer the values in the TES heatmap. This script has produced an array of values that we can use as a lookup.