Strictly speaking, yes, I have been in contact with Smythe Optoelectronics, and I don't know much about it. Look at your picture, it's a little biased, and the difference of x\y value should not be too far. If you are an operator, ask a mechanic to adjust the spectrometer for you. For white light or monochromatic light, chromaticity parameters can be used to indicate which color area the LED is in, which generally requires ... high efficiency and high speed, and each LED can be split and colored.