I am working on building some screens to view inventory in rice bins. Each bin can hold from 1 - 30 loads. Each load has a moisture value that we track when transferred to the bin. I am trying to figure the best way to be able to log each loads moisture value going into a bin and be able display an average moisture of the bin. These values are entered manually not OPC values. What is the most effieceint way to set things up get the average and ignore the values as zero? I tried using MySql but I would then need to transpose the data to get averages. I tried creating tags for each load but writing an expression to calculate the average and ignoring zero gets hairy. Just looking for other suggestions or ideas I may be overlooking.