1: The southeast end    20.5 (nonstandard)
2: South end east of highway    24.5
    Metro platforms
2a: Northeast cafes             27.5
Tramway and interchange 28.5
Highway underpass N     28.5
3: Ground level of east end     29.5
Railway platform                33.5
4: Ground level of west end    34.5
Tramway at north end 36.5
5: First air-only level 39.5
    Food court
6: Second air-only level    44.5
7: Rooftops/apartments      49.5