Since the outdoor temperature was lower in the control, ignoring it will inflate how much the two-hose unit outperforms by bringing the effect of both units closer to zero. If we assume the temperature difference the units and the control produce are approximately constant in this outdoor temperature range, then the difference to control would be 3.1ºC for the one hose unit and 5ºC for the two hose unit if the control outdoor temperature was the same, meaning two-hose only outperforms by ~60% with the fan on high, and merely ~30% with the fan on low.
Since the outdoor temperature was lower in the control, ignoring it will inflate how much the two-hose unit outperforms by bringing the effect of both units closer to zero. If we assume the temperature difference the units and the control produce are approximately constant in this outdoor temperature range, then the difference to control would be 3.1ºC for the one hose unit and 5ºC for the two hose unit if the control outdoor temperature was the same, meaning two-hose only outperforms by ~60% with the fan on high, and merely ~30% with the fan on low.