Table 1.

The Pearson's correlations between FLU and 14 widely used models. The low correlations indicate that FLU is highly different from existing models.

model	exchangeability matrix	frequency vector
JTT	0.88	0.79
HIVb	0.86	0.71
HIVw	0.83	0.83
WAG	0.83	0.76
LG	0.82	0.71
CpREV	0.81	0.73
Blosum62	0.77	0.73
MtREV	0.77	0.48
RtREV	0.76	0.66
VT	0.75	0.76
MtMam	0.74	0.48
DCMut	0.74	0.69
Dayhoff	0.74	0.69
MtArt	0.70	0.45