Ideas for how to analyse heatpump data

Im running a hottub heated by a heatpump controlled by HA - works well.

But heating performance seem to vary and I’m not sure based on what. It could be ambient temp, wind speed, wind direction or a combination.

But how to analyze?

So ideally some sort of automated analysis that calculates temp increase/time and correlates with ambient temp or perhaps wind speed and direction.

Any ideas how to approach this is much appreciated.

best wishes,