... /0l Spectrum conditions: overall response is equivalent to tristimulus values X, Y, and Z calculated in corresponding functions under GB3978 standard ... spectrum transmittance (%):±1.5l Repeatability: σ u (Y) ≤0.5, σ u (x),σ u (y) ≤0.003l Instrument stability: ΔY≤0.6l Accuracy ... : ΔY≤2, Δx,Δy≤0.02l Palette system: l Color: X, Y, Z; Y, x, y; L*, a*, b*; L ...