Is there a way to merge and display on-the-fly?

Hi,
My site generates graphs based on data retrieved from a database. The number of graphs being generated is variable and the raw data used in generating these graphs may be displayed beneath each graph. The raw data also has a variable number of columns. I need to either:
a) store the all the data/graphs and merge/display it at the end or
b) merge and display each graph/raw data as it's being extracted from the database.
All ideas welcome. Thanks.

How the graph are created? Are they gif saved into a file?

Yes they are.

If displaying all at one doesn't take more that 2 or 3 second, I this this is acceptable.
If it is longer, You'd better display them step by step.