TWP/SMET/C3 - ORG data noisy due to degraded ground

SMET Rain Data began to be noisy during December 2005 and the problem slowly became worse 
over time so that in February 2006 the ORG was reporting with a constant background value 
of around 0.10 mm/hr rain rate.  ORG voltage showed a near constant value above the 85mV 
threshold.  The ground for the ORG had become degraded and was lost due to corrosion.

Subtract 0.10 mm/hr from data when the constant value shows up.  Any data not 

invloved in the constant value should be viewed critically before assuming rainfall occurred.  
Nearby BoM site with tipping bucket rain gauges may provide data to assist in determining 
if rainfall occurred

• precip_mean
• precip_sd
• precip_max
• precip_min