500 I- 



400 



C 300 



J^ 200 



100 



•a 



t. \ 





* * 



Chi-Squared Probabilities •)(■ 



Probabilities from Simulation • 

 Estimated Spectral Density, p A 



0.05 0.10 0.15 

 Frequency (c/s) 



0.20 



0.25 



Figure 72. Probability intervals for p. Hurricane Carla data 

 number 6886-2. 



73 



