SGP/EBBR/E18 - Six Month Checks

During EBBR 6 month checks (formally called 3 month checks) the Automatic 
Exchange Mechanism is disabled (reflected by home signals near zero) so that
the two aspirator units can be placed at the same height.  The measurements
during these periods do not produce correct outputs of bowen ratio (bowen), 
sensible heat flux (h), or latent heat flux (e), nor do the air temperature
and relative humidity measurements indicate correct gradients.  Checks 
performed just before or after the AEM is disabled also lead to some 
incorrect data.  Incorrect 5, 15 minute and half hour data occurs for the 
period above.

• Bowen ratio(bowen_ratio)
• Bottom T/RH sensor temperature(temp_trh_bottom)
• Bottom air temperature(temp_air_bottom)
• Bottom relative humidity (fractional)(rh_bottom_fraction)
• Bottom vapor pressure(vapor_pressure_bottom)
• Top vapor pressure(vapor_pressure_top)
• Surface latent heat flux(latent_heat_flux)
• Top relative humidity (fractional)(rh_top_fraction)
• Surface sensible heat flux(sensible_heat_flux)
• Top air temperature(temp_air_top)
• Top T/RH sensor temperature(temp_trh_top)

• Right relative humidity (mV)(rh_right_mv)
• Left relative humidity (mV)(rh_left_mv)
• Left air temperature(temp_air_left)
• Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
• Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
• Right air temperature(temp_air_right)

• Top T/RH sensor temperature(temp_trh_top)
• Bottom air temperature(temp_air_bottom)
• Top vapor pressure(vapor_pressure_top)
• Top air temperature(temp_air_top)
• Top relative humidity (fractional)(rh_top_fraction)
• Bottom vapor pressure(vapor_pressure_bottom)
• Bottom relative humidity (fractional)(rh_bottom_fraction)
• Bottom T/RH sensor temperature(temp_trh_bottom)