This graph may not tell you how many years each of the Doctors has been traipsing through time and space, but it will tell you exactly how long every single Doctor was on the air for.
Obviously Tom Baker’s Fourth Doctor wins this competition. William Hartnell’s original Doctor comes in at second place. It’s a handy and fun chart if you want to know exactly how long each Doctor was on the air. And of course you do, because we can’t get enough of Doctor Who.