Corrected entry: In episode seven the Doctor says that he is sending Zoe and Russell back to the 1917 (World War I) zone, but instead they arrive in the American Civil War zone.
Corrected entry: The chart of the radiation on the island is wrong. The dialogue says it has steadily decreased over the past 172 years then suddenly disappeared. But the chart says it initially dropped rapidly for a few years, then started to fall at a slower rate for about a hundred years, then changed again and dropped to zero over fifty years. However, the way radiation disperses is anything but steady. It will continually slow down in its dispersal, forming a curve on a graph.
Correction: Actually, radiation will decay from an atomic bomb explosion at varying rates, depending upon which radioactive elements are dominant.
The Krotons - S6-E4
Corrected entry: The Doctor says he isn't a Doctor of medicine, but in the earlier story 'The Moonbase' he said he was sure that he was medically qualified.
Correction: The Doctor studied medicine under Joseph Lister in 1885. While he presumably hasn't taken the exams required to officially become an MD, he does have the skills to be considered qualified.
Corrected entry: After the second doctor's regeneration, the TARDIS lands in a field with trees around it. When the third doctor comes out of the TARDIS, the background changes completely.
Correction: Correct me if I'm wrong here, but doesn't the Third Doctor not actually appear at the end of "The War Games"? As I understand it, the serial ends with Two being punished by the Time Lords by being made to regenerate, but the results of the regeneration aren't seen until Three arrives on Earth at the beginning of "Spearhead From Space."
Correction: It wouldn't be the first time he's got the coordinates wrong.
Josman