Text Appendix C 



i Complex notation y/pl [in exponent or on main 



equation line] 



Gauge index [as subscript] 



idgfr Degrees of freedom in cross-spectral estimation 



i f dtmd Flag indicating whether or not data have been 



detrended 



ifimle Flag indicating if maximum likelihood or iterative 



maximum likelihood estimation is used 



i f wi ndo Flag indicating whether or not data segments have 



been windowed 



istot Total number of seconds duration of a time series 



i ter(nf ) Number of iterative maximum likelihood itera- 



tions used to compute directional distribution at 

 frequency f (nf ) 



/ Number of gauges in an array 



/( 9 m _ 6 m ) Cumulative distribution function 



Im[ ] Imaginary part of complex entity contained in 



brackets 



j Gauge index [as subscript] 



k n Magnitude of wave number vector associated with 



n '* discrete frequency 



k ( 6 ) Wave number vector for wave direction m at n ,h 



discrete frequency 



/ Summation index 



m na Index associated with discrete direction 



m , First cosine moment of D ( m ) 



m 2 Second cosine moment of D ( m ) 



Appendix E Notation E3 



