The Weatherlink samples the barometric pressure only once at the time of the archive and writes that value into the archive memory.
These descriptions were taken from the "ReadMe" file included with the Davis Instruments, Weather Link software package. The descriptions have been modified to suit the specifics of our implementation.
When error correction is selected the search is against data that was checked with a moving average of 24 entries with any data greater than 6 standard deviations from the moving average removed. This error correction was done to try and remove any instrumental anomalies from the data. Our error correction is automated and it should not be assumed that any data that was thrown out has been checked by human eyes. If you want the raw information returned from your search, turn off the error correction in the search options.