Attribute: CACODE_MO

code  description    
A    Accepted monthly value     
E    Monthly value includes estimated values     
I    Monthly value incomplete - at least 5 days available, but 25 or fewer days available for month summary     
IE    Monthly value incomplete - only 6-25 days are proportionally sampled in the month; one or more values estimated     
N    No analyses conducted for proportional samples taken during the month     
Q    Monthly value includes questionable sample values