[SPD3]

"A BOILER processes FUEL in to steam at an average rate of five (5) FUEL per second per GOAL, but actual rate is dependent on the amount and packing of FUEL in the GOALS (i.e. the tighter the packing in a GOAL, the faster the FUEL processing rate)."

pg. 34

These are the rules on the boiler for FIRST Steamworks however I am a little confused on what they mean. I am mostly confused by the example in the parentheses at the very end. Can someone please help explain this part of the rules to me?