Albedos for the color checker?

[Ihno]

Hi, does anyone know a sheet of the correct albedos (in float values) for the Xride color checker passport?
It would be very useful for texture Photography.
Unfortunatly the color values they provide are not representing the albedo. For example the white is srgb 254 ie. 0.99216 in linear float.
I don't believe it can be much higher than 0.8 actually.