Thank you for your clarification. As for why only twelve are subtracted when we can count 18 bodies on screen in episode 203… surely not all of them died of their wounds. Some of them must have been saved after the cylons were cleared from the ship.

202 -1 Tarn is killed on Kobol.

203 -12 Galactica crew members killed by the Cylon boarding party. I also think that this is a low count. I counted bodies on screen and came up with 18.
1 – The Viper pilot (Flyboy) returning from hangar deck (If he dies instantly in the “teaser,” he should be counted in the 202 survivor count. If he dies of his wounds later in the episode, he should be counted in the 203 survivor count).
4 – On Deck 12, small arms locker corridor (outside small arms locker).
2 – Inside small arms locker with Jammer.
6 – On Deck 12, port corridor (found Dualla).
1 – Socinus on Kobol.
2 – On Deck 12, main arms locker.
2 – Marines in front of aft damage control.

204 -1 Crashdown killed on Kobol.

205 -4 Civilians killed in the “Gideon Massacre.”

206 +1 Helo returns from Caprica.

207 -3 Elosha and 2 others are killed in a Cylon ambush on Kobol.

208 -2 Meier and his henchman are killed in a shootout outside the Tomb of Athena on Kobol.

210 +1,752 The crew of the Battlestar Pegasus. They are counted because they appear in the “teaser” before the opening credits.

I think I counted everyone correctly. I hope this helps.

Brian Thomas couldn’t find a list of the survivor counts for BSG, so he compiled it himself by watching the DVDs:In one of the podcasts for Battlestar Galactica, Ron More mentions to watch the survivor count, that they are watching…