SGP EBBR E20 - E20 EBBR Some Data Incorrect

Quantities requiring a starting value were incorrect; sensible and latent heat 
fluxes were therefore incorrect also.

• surface_soil_heat_flux_avg
• sensible_heat_flux
• energy_storage_change_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• energy_storage_change_2
• surface_soil_heat_flux_2
• energy_storage_change_1
• surface_soil_heat_flux_1
• energy_storage_change_5
• latent_heat_flux
• energy_storage_change_4
• surface_soil_heat_flux_5