Can anyone provide a breakdown of what each fare class means (ie: ie: A B C E F G H I J K L M N O P Q R S T U V W Y) and then list each fare class to what bucket it belongs to in A/C's fare structure of Tango, T+, Latitude....etc etc.

I know J = First class, I -> seems to be J class seats available for upgrade but other than that I haven't been able to crack it.