EqD Article: www.equestriadaily.com/2012/02…
Basic statistical analysis of the screentimes of the Mane 6 + Spike.
EDIT: Found a singular error in the first episode (Twilight has now 30 seconds less of screentime).
S1 & S2 & S3 analysis: fav.me/d5kzo28
If you want to help by giving sugessions for my next analysis: fav.me/d4qteis
On average, I analyzed an episode a day (and each took me 2-3 hours).
Tons of paper were wasted on this, but I am satisfied with the results.
Margin of error:
Since the timers of the video players I used show only full seconds, I had to guess how the fractions of seconds were long when added up together.
On average, in each episode there may be a 10 second difference between the real screentime of a character and the screentime I calculated - but since it can be either more or less than reality, given the number of episodes and the fact that all of the characters are prone to this miscalculation, the overall screentime difference will probably be negligable.