Table A-12. Statistical comparison (t-test) of mean densities of unionids at Reach 15 (UMR) between sites 

 and years (1983 to 1995). Statistically significant differences are denoted by the level of 

 significance and the relationship (> or <) of mean densities. 



Reach 15 Sites : 1983 to 1995 



PageA-11 



Whitney et al., Unionid Survey - Reach 1 5 UMR 



