guess-encoding.py incorrect instructions

[kjohnsen]

Correct me if I'm wrong, but does the guess-encoding script not process base quality strings? (e.g., bb_eeeeeggggfiiiiiiiiiiiiihhiifhiiiiiihiiiiiiifffc)

The example at the top of the script uses cut -f 5 when the 5th column is the mapping quality, not the base quality string. Shouldn't it be cut -f 11?