20 



Table 9. — Percentage of wave height above still water level, shallow-water waves 



Again comparing measured and theoretical values as above, it is 

 found that the agreement is on the whole good though individual 

 comparisons show differences amounting to about 4.5 percent. 



The measured values for percentage of wave height above still 

 water level are tabulated in table 9. The results are presented 

 graphically in Figure 10. The theoretical values are derived from the 



