Deciphering Table 392.22(A)(1) Column 2, cable tray fill

[morgan3520]

I need help deciphering Table 392.22(A)(1) Column 2, for cable tray fill ratio calcs. I am the engineer on the project, the contractor want to use multi-conductor cable for all load being ran in cable tray. Checking my math: I have 6 cable 4/0 and larger in 48" cable tray (Max. Allowable Fill - 56in²). Sd, sum of diameters (see attachment). Allowable fill will be (56-13.8)in². So when adding up the diameter of the cables, are the 4/0 and larger cables area (19in²) included or excluded?