Table 1. - Comparison with strain measured at Durmid Hill Laser Strain Meter (DHLS)
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DHLS 		-115.787        33.393	402
becker		-115.787	33.393	240
bird		-115.787	33.393	2105
freed		-115.787	33.393	363
fialko 		-115.787	33.393	255
holt		-115.787	33.393	295
kreemer		-115.787	33.393	493
pollitz		-115.787	33.393	284
smith_konter	-115.787	33.393	589
zeng		-115.787	33.393	302
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Note the strain estimate from the DHLS is not exactly
the same as the second invariant
sqrt(exx*exx+eyy*eyy)
eyy = -230 nanostrain/yr
exx =  330 nanostrain/yr