A comment in another thread got me thinking and I ended up working out Lewis' success on different tracks (ranked by count-back, I couldn't be bothered to calculate an average). Make of it what you will..
Shanghai........1,1,2,3,6,DNF
Hungary.........1,1,4,5,DNF
Montreal........1,1,DNF,DNF
Melbourne.......1,2,3,3,6,DSQ
Silverstone.....1,2,3,4,16
Spa.............1,3,4,DNF,DNF
Istanbul........1,2,4,5,13
Monaco..........1,2,5,5,6,12
Abu Dhabi.......1,2,DNF
Singapore.......1,3,5,DNF
Hockenheim......1,4
Nurburgring.....1,9,18
Fuji............1,12
Indy............1
Valencia........2,2,2,4
Barcelona.......2,2,3,8,9,14
Korea...........2,2
Bahrain.........2,3,4,8,13
Sepang..........2,3,5,6,7,8
Monza...........2,4,7,12,DNF
Brazil..........3,4,5,7,DNF
Suzuka..........3,5,5
Magny Cours.....3,10,
Buddh...........7