The format for the *.dat files is:

1	Re - Reynolds number
2	Ra - Rayleigh number
3	RSS combined measurement uncertainty %
4	theta - surface angle from vertical degrees (-90 is facing up)
5	psi - flow angle from vertical degrees (0 is up)
6	Pr - Prandtl number
7	Nu - Nusselt number

Characteristic-length L = 0.305 m
