Better than your previous trend. It is related to your power so higher the power, higher EF. If your RPE for a given ride stays the same but EF improves, you are trenindg in the right direction. I would check specific rides only, like your longer z2 ride and only in macroscale, as your HR can be highly variable.
I do not track EF for other type of rides. RPE will be my main indicator of change along with power in efforts sst and above.