I have been checking the CWOP data analysis for my weather station and it is telling me that I am failing the Level 3 Spatial Consistency checks on the Barometer. What that means is that I am not consistent with the other weather stations around me, so I will have to change.
The Barometer is showing an average barometer error of -1.9 miliBars, a standard deviation of 1.1 miliBars, and a worst daily average barometer error of -2.7 miliBars. The average error works out to be -0.0561 in HG. I am going to add a "fudge" factor of this error, wait a week, and see what the analysis brings. The analysis will flag it as bad just as soon as I add the "fudge" factor for a period of time. We shall see.
Update: CWOP is reporting that I am even further out from where I should be. I have decided to remove the "fudge" factor from the weewx configuration file. The difficulty is that I have apparently not calibrated the ISS/Console unit (per weewx), the output from the console is in SLP (sea level pressure), and CWOP is expecting "Alt" style pressure levels. I am not sure how weewx is handling this issue. Right now I do not have the time to really research this out to a conclusion. I do know that the barometric pressure from a Davis station with weewx has been a hot topic over the last couple of years. I am giving weewx the benefit of the doubt by relying on their calculations knowing that I am outputting from a Davis station.