Study the following information carefully and answer the given questions.
S, T, U, V, W, X, Y and Z are sitting around a circular table facing the centre but not necessarily in the same order. S sits third to the right of T. Only three people sit between U and Y. U is neither an immediate neighbour of S nor T. Only three people sit between T and W. Z sits to the immediate right of W. V sits third to the left of W.
How many people are seated between S and Z, when counted from the right of S?