SGP/MWR/B5 - Some rain events flagged

March 18 there was a strong rain event. During this time the brightness temperatures where 
> 100 K due to water accumulating on the radiometer, however the wet window flag 
indicator was not tripped.  Users should not rely on the wet window flag to screen 
rain-contaminated data.  Instead, apply a brightness temperature threshold of 100 K instead to both 
channels.

Apply a brightness temperature threshold of 100 K to filter out rain events.

• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)

• Mean 23.8 GHz sky brightness temperature(tbsky23)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Total water vapor along LOS path(vap)
• Averaged total liquid water along LOS path(liq)