This is a measurement done to determine which heating elements output the most power. FROSTI was supplied 33V, and a photodetector was held to the center of each heating element directly at the aperture.

Element #1 (top), RTD0 - 0.33 V
Element #2 (bottom right), RTD1 - 0.21 V
Element #3 (top left), RTD2 - 0.15 V
Element #4 (bottom), RTD3 - 0.33 V
Element #5 (bottom left), RTD4 - 0.31 V
Element #6 (right), RTD5 - 0.25 V
Element #7 (top right), RTD6 - 0.00 V (shorted)
Element #8 (left), RTD7 - 0.31