Originally Posted by
jens
And so on, and so on.
Not a big problem. I am trying to understand you are trying to have some general methodology. If I personally calculated, I would go on a race-by-race basis. I.e there is a difference whether a driver retired from P1 or P5, whether he had a car problem from P2 and dropped to P6, or retired altogether. Whether he stalled on the grid from P3, or had a crash with another car from P7. Or he inherited a race win from P5, because all drivers in front of him retired with problems (Johnny Herbert in 1995). For example in Spain 2012 Hamilton finished 8th, but arguably lost a race win, because he was DQ'd from qualifying due to fuel irregularity. Every situation is unique. That's why I personally don't use a "generic methodology", because it doesn't enlighten, what exactly was going on.
BUT... Leaving criticism aside, your work shows at least several tendencies (i.e Vettel winning by a bigger margin in 2010/12, Mansell and Senna neck-and-neck in 1991, Ferraris winning 07-08, etc). I don't want to criticise too much people, who put in an effort to do something.:) While it is easy to criticize from distance. But there is a possibility to go more into detail.