Show AP Stats

Is there a good reference in how to interpret the "show AP stats" command? 
I have a new (online for 15 days) 1142 listed below.  It is the first 802.11n AP I've deployed.  The stat counters look bad (TxFragment Count = TxFrameCount, RetryCount > TxFrameCount).  But I don't know how to put it all together to say "here are the stats, this is the problem".  I see TxFrameCount, but no corresponding RxFrameCount, so it is hard to calibrate some of the errors.  Any help would be appreciated.  I'm running code 5.2.193.0 (and can't upgrade right now) on a WiSM.
>show ap stats 802.11b <AP Name removed>
Number Of Slots.................................. 2
AP Name.......................................... <removed>
MAC Address...................................... 00:22:bd:<removed>
Radio Type....................................... RADIO_TYPE_80211b/g
Stats Information
  Number of Users................................ 5
  TxFragmentCount................................ 926078
  MulticastTxFrameCnt............................ 65328
  FailedCount.................................... 403683
  RetryCount..................................... 1642858
  MultipleRetryCount............................. 13639
  FrameDuplicateCount............................ 0
  RtsSuccessCount................................ 0
  RtsFailureCount................................ 0
  AckFailureCount................................ 690010
  RxFragmentCount................................ 0
  MulticastRxFrameCnt............................ 110664
  FcsErrorCount.................................. 21455258
  TxFrameCount................................... 926078
  WepUndecryptableCount.......................... 93
  TxFramesDropped................................ 503
--More-- or (q)uit
Call Admission Control (CAC) Stats
  Voice Bandwidth in use(% of config bw)......... 0
    Total channel MT free........................ 0
    Total voice MT free.......................... 0
    Na Direct.................................... 0
    Na Roam...................................... 0
  Video Bandwidth in use(% of config bw)......... 0
  Total num of voice calls in progress........... 0
  Num of roaming voice calls in progress......... 0
  Total Num of voice calls since AP joined....... 0
  Total Num of roaming calls since AP joined..... 0
  Total Num of exp bw requests received.......... 0
  Total Num of exp bw requests admitted.......... 0
  Num of voice calls rejected since AP joined.... 0
  Num of roam calls rejected since AP joined..... 0
  Num of calls rejected due to insufficent bw.... 0
  Num of calls rejected due to invalid params.... 0
  Num of calls rejected due to PHY rate.......... 0
  Num of calls rejected due to QoS policy........ 0

Hi d_p_grant:
No, there's not a clear, modern one all polished and tailored for the Unified Wireless Network products.  There's an oldie but goodie
Error Statistics on the Cisco Aironet 340 Series Bridge
http://tools.cisco.com/squish/55528
that goes through the various types of RF related stats, what they mean and offers some suggestions on troubleshooting.
Keep in mind
wireless is a half-duplex, acknowledged medium
statistics are only relevant over time, so if you don't know when "clear stats " was last run, there's not much value for a specific incident
here at OSI layer 2, units of communication are frames, and that if there's too much data to fit into a single frame, that data will be broken into multiple frames or fragments
when the RF environment is clean and the channel is available (i.e. nobody else is talking,) stations can pretty much transmit when they want to;  if there's a lot of activity, stations will begin using RTS/CTS to "raise their hands" to receive a chance to transmit.  
In making the connection to the Error Stats doc
FailedCount is describing what the doc calls Holdoffs
RetryCount is describing what the doc calls Retries
FcsErrorCount is describing what the doc calls CRC Errors
The fact that there are so many FcsErrorCount in relation to all the other statistics implies that the radio is receiving a lot of packets that are failing the CRC check.  Assuming that the sender was smart enough to calculate the CRC correctly when the frame left the sender's antenna, and that the receiver is smart enough to do the CRC check correctly when it received the frame on its antenna, the corruption must be happening while the frame is in the air (interference.)
The Cisco Spectrum Expert can help you see what's in the air and what's interfering with your wireless network.
http://tools.cisco.com/squish/70EF4
Sincerely,
Rollin Kibbe
Network Management Systems Team

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