Good old "Lostallhope", I think. I don't know if the side still exists.
But I don't agree a 100% with those numbers. Like, if you jump from a sufficient height (150feet+) it's obviously 99% lethal. Hit by train? If the train is going 70+mph and you hit it head first, then it obviously 99% lethal as well. He is taking all kind of factors, which might have made the attempts less lethal into account. How can agony be so high also? People who have survived being shot in the head said that they didn't feel anything. A bullet travels faster than pain signals, so you shouldn't be able to feel being shot in the head. Also there should be very little/no agony involved in jumping from a very tall place, since you would die instantly, so I don't agree completely with the charge, although it's probably a good "general" overview.