[Django]-What is the most efficient way to store large arrays of floating point data in mysql for access through django?

Most modern systems have more than enough memory so going to great lengths to save a few bytes here and there aren’t worth the complexity and investment in development.

A database double is more than adequate for such a value. Clearly, there are way more significant digits than a transducer can accurately provide. If there is some sort of chain-of-custody of evidence, then store the value as a string. It can be converted to a float or double on-the-fly if needed for a calculation.