Note no obvious physical reason why dependence of PSV on h should be linear. Try including terms with
h2, h3 and higher powers of h but they lead to values which are undistinguishable from zero at 95%
Approximate significance tests show that coefficients are significantly different from zero in large subregions
of the complete period range.
Only give coefficients for 11 periods. Graphs of coefficients for other periods.
Note results are only preliminary.
Note amount of data too small to include more sophisticated independent parameters.