SGP/EBBR/E4 - EBBR E4 6-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.

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

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

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