Good points. Now I am not going to excuse for expriming my thoughts on a public forum, but I will give right to you that one need to have data to sustain his points.
Now strictly to subject, would be indeed a nice exercise to take a team performance ( under any scoring formula ) and correlate it with the weather at that time. This data ( team data and weather data) exists. If we find any correlation - not sure. Could be that for some teams it doesn't exist - they play good no matter the atmospheric conditions.
The second exercise is the yellow cards, but this is indeed hard to factor since is very dependent of the coach strategy ( we cannot assume that the same player always plays). So, yes, OK, let's leave that out.
Now strictly to subject, would be indeed a nice exercise to take a team performance ( under any scoring formula ) and correlate it with the weather at that time. This data ( team data and weather data) exists. If we find any correlation - not sure. Could be that for some teams it doesn't exist - they play good no matter the atmospheric conditions.
The second exercise is the yellow cards, but this is indeed hard to factor since is very dependent of the coach strategy ( we cannot assume that the same player always plays). So, yes, OK, let's leave that out.