In photometry. spectrally integrated quantities are commonly used. and their uncertainties are calculated using classical approaches. Since determining correlations at different wavelengths and effects on spectrally integrated quantities is rather complex. https://safeersappliancers.shop/product-category/faber-high-light-rad-brs-wh-matt-a91-matt-white-91cm-110-0456-206-cooker-hood/