SGP/SEBS/E14 - Soil temp 3 incorrect

Surface Energy Balance was sometimes incorrect when soil temperature 3 measurements were 
erratic.  Replacement of multiplexer resolved the problem.

• Soil temperature mean 3(soil_temp_3)
• Surface energy balance(surface_energy_balance)
• Surface soil heat flux 3(surface_soil_heat_flux_3)
• Soil moisture 3, gravimetric(soil_moisture_3)