PVC/MET/M1 - T/RH sensor failure

Temperature, relative humidity, and vapor pressure data are incorrect due to a failed 
sensor. Sensor replacement corrected the problem.

• Relative humidity mean(relh_mean)
• Vapor pressure mean(vappress_mean)
• Temperature mean(temp_mean)
• Std Dev of Air Temperature(temp_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Vapor pressure standard deviation(vappress_sd)