An ap225 will still broadcast on the 5ghz band with regular POE without any restrictions.
I would type "show ap bss-table" to see what access points are broadcasting what SSIDs on what bands.
You may also want to check your survey software to make sure it was scanning on the 5ghz band or, of you are using DFS channels at those sites, that it was scanning those channels when you take the survey. In addition, if you have your survey software to scan all 5ghz channels, there are quite a few channels to go through and a single click might not have cycled through all the channels to capture the channels that your APs are broadcasting.
#AP225