HRV data can be extracted and analyzed by different types of analysis programs designed to interpret this data.
emWave Pro Plus can only export as a .json file or in .rr value.
Here is a list of some of the programs known to exist for research purposes.
Free HRV analysis programs:
HeartMath has no affiliations with these programs nor shares any responsibility for any data management issues that may occur in the use of these free research programs.