118


Table 5. Fn's, an's, and b 's from Fourier analysis of the most
important frequencies in the 27-yr set of total monthly rainfall data
from Ft.' Myers.


Harmonic Length of cycle F(n) an bn

 20 1.35 yr 0.78289 -0.17861 0.28361

 27 1 yr 3.8465 -0.22482 0.18289

 54 6 mo 1.3576 0.34984 -0.32516

 81 4 mo 0.67012 -0.10529 0.16781

 98 3 mo 0.75329 0.21148 0.14041


 Fn) = 1/2 (a-jb )

 j = imaginary number (-1)'
 an = coefficient for "real" component of the 1th harmonic
 b = coefficient for "imaginary" component of the nth harmonic