I want to sum up the total volume of all transitions I've made at all price levels. Say, I make 20 transitions on the same market everyday. After a week, I made 100 transitions and I trade at 30 different price levels ranged from $1 to $100. The result table/chart should have 30 rows but I want the data input table with just 20 rows. Is it possible to sum up the total volumes for each given price level without having to jump across fields(skipping between 100 rows). That is, to sum up one week records with just 20 rows(20 price per day) x 5 columns(each day one column). thx!!! mfhboy PS: This is my FIRST post here and I'm glad to be here!