An article on the TBred Times site today reports that scientists & racing officials are attempting to produce equipment which would "objectively measure racetrack surface conditions such as moisture content and cushion flexibility on a daily basis." The article suggests that measurements would be taken at different locations on the track, rails & turns for example, after morning training & after the races were run, & that the results would "possibly" be given to the betting public as well as horsemen & track supers. At present, the only thing I know of which is available, assuming you can find it, is a soils composition chart which I have never figured out how to use or interpret. If you are persistent, you can also arrange a meeting with an asst. track super where, if my single experience is any indication, you will learn that deciding what to do to the track on any given day is considered an art among hardboots whose only interest is safety, & who do not thoroughly understand or particularly care about subjects like track variants & biases.