- The highest officially named and "occupied" level is 160 mezz. 3.
The ladders and platforms continue to the top of the structure where they can exit a hatch to an outdoor platform with a handrail to access the lights on the top - the floor of that platform is 818.0 m.
Keep in mind that although there are stairs, ladders, and landings right to the top, everything above 160 mezz. 3 are not official levels and will not be included in the floorcount nor the lower 4 levels below grade.
There is 162 levels as follows:
160 levels
Add 6 - Ground, 155 mezz, 158 mezz, 160 mezz, 160 mezz 2, and 160 mezz 3
Subtract 4 - Skipped levels 41, 74, 110, and 137