NSA/MET/C1 - CMH offline

Beginning 1/24/2011, the CMH went offline resulting in missing temperature and dewpoint 
measurements and erroneous vapor pressure, saturation vapor pressure, and RH measurements. 

Problem fixed with a power cycle.

• CMH relative humidity, calculated(cmh_rh)
• CMH saturation vapor pressure, calculated(cmh_sat_vapor_pressure)
• CMH vapor pressure, calculated(cmh_vapor_pressure)
• CMH temperature(cmh_temp)
• CMH dew point(cmh_dew_point)