There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Well done, Pod. Based on what I have, heard and saw, I'd say 213,5 kg. (471 pounds) for an average captive male Amur tiger could be about right. My guess would have been between 450-500 pounds and a bit closer to 450, say 460-475 pounds. Sample size also ok.
I noticed you didn't include a few very large tigers. I can understand Baikal (no solid confirmation about his alleged size anywhere), but the tigers in the Slovak facility were large animals. Maybe Amnon is able to find out a bit more about these tigers. Same for those living in the Prague Zoo.
As to the two male Amur tigers I posted about in 2013. The one I weighed was 185,5 kg. at 194 cm. in head and body, but you have to remember this was a few weeks after seven weeks of near-starvation. In good health, he would have been 190-195 kg. (420-430 pounds). The other male was weighed at Schiphol Airport quite some years after I had measured him. Well over his prime, he wasn't 213, but 211 kg. (466 pounds).
This is one of the Amur tigers in the Slovak facility: