Bubble Chart(Grid Chart)

[#1]

I am struggling to create the Grid Chart I want.

I have three fields per row of data I wish to have bubbles for, each represented as hours(0-24).

Therefore I want to see 25 bubbles for each of the 3 fields represented by the number of records that match the hours.

e.g. 153 rows of data have 22 in Field 1 so I expect to see a bubble representing that.

Can this be done? I effectively only have 2 numeric values, hours and number of records per hours.

Hope the above makes sense.