Help with a data set

Hello, I am trying to create a Data set that will display a graph if a tag is equal to a certain value. For example:

I have PI Tag   FM1.Cement_Type   This Tag could have up to only 4 values which are B-LOK-N, B-LOK-S, MT-II, MT-II LA

The 2^nd PI tag is   J281006FY02   and this tags value ranges is a tons per hour that range from 0-350

What Im trying to make a trend for is when PI Tag   FM1.Cement_Type equals B-LOK-N it will total the J281006FY02 tag of tons per hour for lets say 24 hours. And total seperatly if it is B-LOK-S and so forth.

So If tag FM1.Cement_Type  value  from 1am-230am is B-LOK-N  then from 230am- 4am switches to MT-II what id like the trend to do is show from those time dirations the total amount of tonage gathered from from tag  J281006FY02   for each cement type