“…We have plotted these distance units against time in frame numbers with 28 microseconds being the time per frame. So actually this is a X-T diagram for the NOLR 1238 sphere. I mentioned that in the early part of the movie there was no sphere, and therefore we could not record any of the sphere data in the initial parts of the run; however, there were sphere data in the end and we were able to fit an analytic curve through these data.…”