SGP EBBR E13 - E13 EBBR Soil T #4 Incorrect

Soil Temperature #4 floated around, causing average soil heat flow
to sometimes be too small (resulting too small a sensible heat flux and
too large a latent heat flux) or too large (resulting in too large a 
sensible heat flux and too small a latent heat flux).  Investigation of
g4 will indicate when these conditions occurred and the likely effect on
sensible and latent heat fluxes.

• soil_temp_4_rr

• surface_soil_heat_flux_4
• sensible_heat_flux
• soil_temp_4
• surface_soil_heat_flux_avg
• energy_storage_change_4
• latent_heat_flux