#  Gaston H. Gonnet, Mark A. Cohen, Steven A. Benner:
#  "Exhaustive matching of the entire protein sequence database."
#  Science 256(5062): 1443-1445 (1992).
#  Figure 2.
#  PMID 1604319
     A    C    D    E    F    G    H    I    K    L    M    N    P    Q    R    S    T    V    W    Y
A  2.4  0.5 -0.3  0.0 -2.3  0.5 -0.8 -0.8 -0.4 -1.2 -0.7 -0.3  0.3 -0.2 -0.6  1.1  0.6  0.1 -3.6 -2.2 
C  0.5 11.5 -3.2 -3.0 -0.8 -2.0 -1.3 -1.1 -2.8 -1.5 -0.9 -1.8 -3.1 -2.4 -2.2  0.1 -0.5  0.0 -1.0 -0.5 
D -0.3 -3.2  4.7  2.7 -4.5  0.1  0.4 -3.8  0.5 -4.0 -3.0  2.2 -0.7  0.9 -0.3  0.5  0.0 -2.9 -5.2 -2.8 
E  0.0 -3.0  2.7  3.6 -3.9 -0.8  0.4 -2.7  1.2 -2.8 -2.0  0.9 -0.5  1.7  0.4  0.2 -0.1 -1.9 -4.3 -2.7 
F -2.3 -0.8 -4.5 -3.9  7.0 -5.2 -0.1  1.0 -3.3  2.0  1.6 -3.1 -3.8 -2.6 -3.2 -2.8 -2.2  0.1  3.6  5.1 
G  0.5 -2.0  0.1 -0.8 -5.2  6.6 -1.4 -4.5 -1.1 -4.4 -3.5  0.4 -1.6 -1.0 -1.0  0.4 -1.1 -3.3 -4.0 -4.0 
H -0.8 -1.3  0.4  0.4 -0.1 -1.4  6.0 -2.2  0.6 -1.9 -1.3  1.2 -1.1  1.2  0.6 -0.2 -0.3 -2.0 -0.8  2.2 
I -0.8 -1.1 -3.8 -2.7  1.0 -4.5 -2.2  4.0 -2.1  2.8  2.5 -2.8 -2.6 -1.9 -2.4 -1.8 -0.6  3.1 -1.8 -0.7 
K -0.4 -2.8  0.5  1.2 -3.3 -1.1  0.6 -2.1  3.2 -2.1 -1.4  0.8 -0.6  1.5  2.7  0.1  0.1 -1.7 -3.5 -2.1 
L -1.2 -1.5 -4.0 -2.8  2.0 -4.4 -1.9  2.8 -2.1  4.0  2.8 -3.0 -2.3 -1.6 -2.2 -2.1 -1.3  1.8 -0.7  0.0 
M -0.7 -0.9 -3.0 -2.0  1.6 -3.5 -1.3  2.5 -1.4  2.8  4.3 -2.2 -2.4 -1.0 -1.7 -1.4 -0.6  1.6 -1.0 -0.2 
N -0.3 -1.8  2.2  0.9 -3.1  0.4  1.2 -2.8  0.8 -3.0 -2.2  3.8 -0.9  0.7  0.3  0.9  0.5 -2.2 -3.6 -1.4 
P  0.3 -3.1 -0.7 -0.5 -3.8 -1.6 -1.1 -2.6 -0.6 -2.3 -2.4 -0.9  7.6 -0.2 -0.9  0.4  0.1 -1.8 -5.0 -3.1 
Q -0.2 -2.4  0.9  1.7 -2.6 -1.0  1.2 -1.9  1.5 -1.6 -1.0  0.7 -0.2  2.7  1.5  0.2  0.0 -1.5 -2.7 -1.7 
R -0.6 -2.2 -0.3  0.4 -3.2 -1.0  0.6 -2.4  2.7 -2.2 -1.7  0.3 -0.9  1.5  4.7 -0.2 -0.2 -2.0 -1.6 -1.8 
S  1.1  0.1  0.5  0.2 -2.8  0.4 -0.2 -1.8  0.1 -2.1 -1.4  0.9  0.4  0.2 -0.2  2.2  1.5 -1.0 -3.3 -1.9 
T  0.6 -0.5  0.0 -0.1 -2.2 -1.1 -0.3 -0.6  0.1 -1.3 -0.6  0.5  0.1  0.0 -0.2  1.5  2.5  0.0 -3.5 -1.9 
V  0.1  0.0 -2.9 -1.9  0.1 -3.3 -2.0  3.1 -1.7  1.8  1.6 -2.2 -1.8 -1.5 -2.0 -1.0  0.0  3.4 -2.6 -1.1 
W -3.6 -1.0 -5.2 -4.3  3.6 -4.0 -0.8 -1.8 -3.5 -0.7 -1.0 -3.6 -5.0 -2.7 -1.6 -3.3 -3.5 -2.6 14.2  4.1 
Y -2.2 -0.5 -2.8 -2.7  5.1 -4.0  2.2 -0.7 -2.1  0.0 -0.2 -1.4 -3.1 -1.7 -1.8 -1.9 -1.9 -1.1  4.1  7.8