Table:
text: 2004 Bridgestone Grand Prix of Monterey
Race
Race
Driver Team Laps Time_Retired Grid Points
Rodolfo Lavín Forsythe Racing 77 + 2 Laps 11 9
Gastón Mazzacane Dale Coyne Racing 75 + 4 Laps 17 8
Roberto González PKV Racing 52 Out of fuel 18 7
A. J. Allmendinger RuSPORT 43 Contact 4 6
Nelson Philippe Mi-Jack Conquest Racing 11 Contact 16 5
Jimmy Vasser PKV Racing 10 Gearbox 9 4
Justin Wilson Mi-Jack Conquest Racing 1 Contact 15 3

Question: What are the average points of Grid 4 in the 2004 Bridgestone Grand Prix of Monterey's Race?