None No data quality assessment has been made. ODM2 Quality Code Controlled Vocabulary ODM2 Working Group A vocabulary for describing the quality of the observation. Good A quality assessment has been made and all data quality objectives have been met. Unknown The quality of the observation is unknown. Bad A quality assessment has been made and enough of the data quality objectives have not been met that the observation has been assessed to be of bad quality. Marginal A quality assessment has been made and one or more data quality objectives has not been met. The observation may be suspect and has been assessed to be of marginal quality.