Hi all.
The top level is 160 Mezz. 3 - the first level of tier 18 - and is 260 sq. m. Above this is 6.4 m. sections with no named levels. There is a movement among some forummers to show the landings and platforms above 160 Mezz. 3 as numbered levels but this is unofficial.
The official count will be 162 unless they do the measurement from the Concourse level in which case it will be 163. The plans start at 0.00 as the floor of the Ground level but the Concourse does have an entrance at grade 6 m. lower on a different side of the structure than the Ground level entrance so it may be a legit starting point for the official measure.
Going by the plans ;
- 160 levels
less 4 - skipped levels 41, 74, 110, and 137
plus 6 - Ground Level, 155 mezz., 158 mezz., 160 mezz. 1, 160 mezz. 2, and 160 mezz. 3
= 162 levels
(Level 1 is actually the second level as Ground level is the first)