Table:
text: 2008 Valencian Community motorcycle Grand Prix
MotoGP classification
MotoGP classification
Rider Manufacturer Laps Time_ Grid
Anthony West Kawasaki 30 +1:11.181 17
Toni Elias Ducati 30 +1:37.055 11

text: 2008 Valencian Community motorcycle Grand Prix
MotoGP classification
MotoGP classification
Rider Manufacturer Laps Time_ Grid
Casey Stoner Ducati 30 46:46.114 1
Dani Pedrosa Honda 30 +3.390 2
Valentino Rossi Yamaha 30 +12.194 10
Andrea Dovizioso Honda 30 +24.159 9
Nicky Hayden Honda 30 +26.232 3
Colin Edwards Yamaha 30 +32.209 4
Shinya Nakano Honda 30 +34.571 15
Jorge Lorenzo Yamaha 30 +35.661 7
Loris Capirossi Suzuki 30 +38.228 8
Alex de Angelis Honda 30 +47.583 16
James Toseland Yamaha 30 +52.107 5
Sylvain Guintoli Ducati 30 +52.350 13
Chris Vermeulen Suzuki 30 +52.833 12
John Hopkins Kawasaki 30 +53.227 14
Randy de Puniet Honda 30 +53.411 6
Marco Melandri Ducati 30 +1:08.387 18

Question: What is the average starting grid for rider Toni Elias with more than 30 laps in the MotoGP classification of the 2008 Valencia Motorcycling Grand Prix?