We suggest to store the trend of meausers  (temperature, pressure, moisture....) during a production cycle in an array instead of a group of tags (preassure1, preassure2, preassure3...). The benefit is that

• We can reduce the number of tags and simplifty the solution.
• Calculations can be done easier using MI scripts

Note:

• you need to design correctly the database storage to be able to persist growing number of data history.
• Persisting the data into database ideally should be done using stored procedure.
• There should be a seperate OPC tag that signalized that the values in the array are ready to be read.