reference               site          study_type    omega_AR  standardized_calcification_anom  
Albright_et_al._2008    Florida       Laboratory    2.2       -0.88                            
Albright_et_al._2008    Florida       Laboratory    2.23      -1.01                            
Albright_et_al._2008    Florida       Laboratory    2.61      -0.53                            
Albright_et_al._2008    Florida       Laboratory    2.62      0.16                             
Albright_et_al._2008    Florida       Laboratory    3.1       0.71                             
Albright_et_al._2008    Florida       Laboratory    3.2       1.54