10 day statistics:  2026090918  -  2026091918
Disclaimer: The statistics presented here are calculated based on data from our development mashine and may not reflect the most recent updates or changes. If you notice that the statistics appear outdated or inaccurate, please reach out to us <obsproc_support@noaa.gov>  for assistance in verifying and obtaining the latest information.
            ACAR Statistics Versus the NCEP Guess
                10 day statistics
Pressure Categories (hPa)
LOW:   PRES >  700.0
MID:   PRES <= 700.0 and PRES >= 300.0
HIGH:  PRES <  300.0

SID: aircraft tail number
NA: number of temperature or wind reports available in the pressure category
NR: number of temperature or wind reports rejected in the pressure category
QB: humidity bias (OB - Guess) in 0.1 g/kg
QSTD: standard deviation of humidity difference of (OB - Guess)

Specific Humidity