The @STC results are considered calculable in the presence of:
• Front-side irradiance values (also valid for bifacial modules) above the
minimum threshold set on the instrument and stable (variation between start
and end of measurement campaign <1%)
• Module temperature value in the -40°C ÷ 100°C (-40°F ÷ 212°F) range
• Voc and Isc @STC with positive value