Here is a comparison of Davis Vantage Pro 2 vs WeatherFlow data on 10/9 at 1423.
Davis Wf
Temp 73.9 74.8
Barometer 30.06 30.05
Wind se@4mph sse@3.7mph
DP (Hum) 49 (41%) 51 (43%)
As you can see the readings are very close. The air is in a Stevenson screen and the sky is on a 9 foot pole. The Davis equipment is in there “plate” shelter. All equipment is within 20 feet of each other in a grassy backyard in Heyworth, Il. (A photo can be seen in the general section dated 10/9).