SGP/STAMP/E15 - 5 cm west measurements too low.

5 cm west soil measurements were generally too low due to a faulty factory calibration, 
and sometimes went offscale low.

• Real dielectric permittivity, west profile(real_dielectric_permittivity_west)
• Soil specific soil water content, west profile(soil_specific_water_content_west)
• Total plant water availability, west profile(total_plant_water_availability_west)
• Plant water availability, west profile(plant_water_availability_west)
• Loam soil water content, west profile(loam_soil_water_content_west)