anchor.diff:  11|73|The Monster of Peladon|150|https://en.wikipedia.org/wiki/The_Monster_of_Peladon|The TARDIS returns the Doctor to Peladon fifty years after his last visit.|
   11|74|Planet of the Spiders|150|https://en.wikipedia.org/wiki/Planet_of_the_Spiders|Giant Spiders and Mike Yates feature in the Third Doctor's swansong.|
   12|75|Robot|100|https://en.wikipedia.org/wiki/Robot_%28Doctor_Who%29|After his regeneration, the Doctor investigates the robbery of top secret plans.|
  -12|76|The Ark in Space|100|https://en.wikipedia.org/wiki/The_Ark_in_Space|The TARDIS materialises aboard the Ark, a space station in orbit around Earth.|
  +12|76|The Ark in Space|100|https://en.wikipedia.org/wiki/The_Ark_in_Space|The TARDIS materialises aboard the Ark, a space station orbiting Earth.|
   12|77|The Sontaran Experiment|50|https://en.wikipedia.org/wiki/The_Sontaran_Experiment|The Doctor, Sarah and Harry arrive on a distant future Earth which is now a desolate wilderness.|
   12|78|Genesis of the Daleks|150|https://en.wikipedia.org/wiki/Genesis_of_the_Daleks|The Time Lords foresee Daleks conquering the Universe, and send the Doctor to stop them.|
   12|79|Revenge of the Cybermen|100|https://en.wikipedia.org/wiki/Revenge_of_the_Cybermen|The time ring returns the Doctor, Sarah and Harry to space station Nerva.|
  
positive.code: 15|94|Image of the Fendahl|100|https://en.wikipedia.org/wiki/Image_of_the_Fendahl|The TARDIS is drawn to Fetch Priory where Professor Fendelman experiments.|
  15|95|The Sun Makers|100|https://en.wikipedia.org/wiki/The_Sun_Makers|Arriving on Pluto, the Doctor is surprised to find it has breathable air.|
  15|96|Underworld|100|https://en.wikipedia.org/wiki/Underworld_%28Doctor_Who%29|The TARDIS lands on a spacecraft piloted by the survivors of the planet Minyos.|
  15|97|The Invasion of Time|150|https://en.wikipedia.org/wiki/The_Invasion_of_Time|The Sontarans invade Gallifrey.|
  16|98|The Ribos Operation|100|https://en.wikipedia.org/wiki/The_Ribos_Operation|To restore cosmic balance, the White Guardian requires the Key to Time.|
  16|99|The Pirate Planet|100|https://en.wikipedia.org/wiki/The_Pirate_Planet|The tracer leads to planet Calufrax in search of the second segment of the Key.|
  16|100|The Stones of Blood|100|https://en.wikipedia.org/wiki/The_Stones_of_Blood|The tracer points to a stone circle on Boscombe Moor, where druids await the Doctor.|
  
negative.code: 5|38|The Abominable Snowmen|150|https://en.wikipedia.org/wiki/The_Abominable_Snowmen|The Doctor is delighted when the TARDIS returns him to the Himalayas in 1935.|Partially Lost
  5|39|The Ice Warriors|150|https://en.wikipedia.org/wiki/The_Ice_Warriors|The Doctor arrives on Earth during a new ice age and meets the Ice Warriors.|Partially Lost
  5|40|The Enemy of the World|150|https://en.wikipedia.org/wiki/The_Enemy_of_the_World|The Doctor discovers he has a double: a powerful politician called Salamander.|
  5|41|The Web of Fear|150|https://en.wikipedia.org/wiki/The_Web_of_Fear|The Yeti invade London, and we meet Colonel Lethbridge-Stewart.|Partially Lost
  5|42|Fury from the Deep|150|https://en.wikipedia.org/wiki/Fury_from_the_Deep|The TARDIS lands on the sea near the coast of England.|Lost
  5|43|The Wheel in Space|150|https://en.wikipedia.org/wiki/The_Wheel_in_Space|The TARDIS lands on a small spaceship where the Doctor is attacked by a Robot.|Partially Lost
  6|44|The Dominators|125|https://en.wikipedia.org/wiki/The_Dominators|A Dominator spacecraft lands on the peaceful world of Dulkis.|
  