Photopic: ${ Lp }     Scotopic: ${ Ls }      S/P: ${Ls/Lp}
(x,y): (${x_k},${y_k})
(x10,y10): (${x10_k},${y10_k})
(u,v): (${u_k},${v_k})
Correlated Color Temperature: ${cct} Kelvin
Color Rendering Index: ${cri}