What is the worst case survival rate after 24 months, assuming all the patients censored ended up dying? What is the best case survival rate after 24 months?

Event (1=death, Year of Death Year of Last Contact Time 0=censored) Number at Risk Number of Deaths Dt Number Cesored 0 20 0 0.95 2 19 0.95 18 0 0.897222 17 0 0.844444 6 NEOCOU WN- 16 1 0.844444 CO 15 1 0.844444 10 14 1 0.844444 11 13 1 0.844444 12 12 1 0.844444 13 13 11 1 0.844444 o o o - o o o 0 - - o0 0 0 0 0- -0- 14 14 o o o - o o 0 0 - - o0 0 0 0 0- - 0- 10 0 0.76 17 17 0 0.675556 17 17 1 0.675556 18 18 1 0.675556 19 19 1 0.675556 21 21 WWW AUT O - 6 0 1 0.675556 23 23 0 0.506667 24 24 1 0.506667 24 24 1 0.506667 24 24 1 0.506667