FRIEDMAN version 1.24 (Jan 17, 2002) http://ff123.net/
Tukey HSD analysis

Number of listeners: 11
Critical significance:  0.05
Tukey's HSD:   0.684

Means:

LAME_130 Nero_v2  CT_v2    CT_v1    Nero_v1  3gpp_v1  iTunes_L 
  4.40     4.37     4.13     4.08     4.01     3.48     1.62   

-------------------------- Difference Matrix --------------------------

         Nero_v2  CT_v2    CT_v1    Nero_v1  3gpp_v1  iTunes_L 
LAME_130   0.027    0.273    0.318    0.391    0.918*   2.782* 
Nero_v2             0.245    0.291    0.364    0.891*   2.755* 
CT_v2                        0.045    0.118    0.645    2.509* 
CT_v1                                 0.073    0.600    2.464* 
Nero_v1                                        0.527    2.391* 
3gpp_v1                                                 1.864* 
-----------------------------------------------------------------------

LAME_130 is better than 3gpp_v1, iTunes_LC
Nero_v2 is better than 3gpp_v1, iTunes_LC
CT_v2 is better than iTunes_LC
CT_v1 is better than iTunes_LC
Nero_v1 is better than iTunes_LC
3gpp_v1 is better than iTunes_LC