github.com/biogo/biogo@v1.0.4/align/matrix/matrices/BLOSUM40 (about)

     1  #  Matrix made by matblas from blosum40.iij
     2  #  * column uses minimum score
     3  #  BLOSUM Clustered Scoring Matrix in 1/4 Bit Units
     4  #  Blocks Database = /data/blocks_5.0/blocks.dat
     5  #  Cluster Percentage: >= 40
     6  #  Entropy =   0.2851, Expected =  -0.2090
     7     A  R  N  D  C  Q  E  G  H  I  L  K  M  F  P  S  T  W  Y  V  B  Z  X  *
     8  A  5 -2 -1 -1 -2  0 -1  1 -2 -1 -2 -1 -1 -3 -2  1  0 -3 -2  0 -1 -1  0 -6 
     9  R -2  9  0 -1 -3  2 -1 -3  0 -3 -2  3 -1 -2 -3 -1 -2 -2 -1 -2 -1  0 -1 -6 
    10  N -1  0  8  2 -2  1 -1  0  1 -2 -3  0 -2 -3 -2  1  0 -4 -2 -3  4  0 -1 -6 
    11  D -1 -1  2  9 -2 -1  2 -2  0 -4 -3  0 -3 -4 -2  0 -1 -5 -3 -3  6  1 -1 -6 
    12  C -2 -3 -2 -2 16 -4 -2 -3 -4 -4 -2 -3 -3 -2 -5 -1 -1 -6 -4 -2 -2 -3 -2 -6 
    13  Q  0  2  1 -1 -4  8  2 -2  0 -3 -2  1 -1 -4 -2  1 -1 -1 -1 -3  0  4 -1 -6 
    14  E -1 -1 -1  2 -2  2  7 -3  0 -4 -2  1 -2 -3  0  0 -1 -2 -2 -3  1  5 -1 -6 
    15  G  1 -3  0 -2 -3 -2 -3  8 -2 -4 -4 -2 -2 -3 -1  0 -2 -2 -3 -4 -1 -2 -1 -6 
    16  H -2  0  1  0 -4  0  0 -2 13 -3 -2 -1  1 -2 -2 -1 -2 -5  2 -4  0  0 -1 -6 
    17  I -1 -3 -2 -4 -4 -3 -4 -4 -3  6  2 -3  1  1 -2 -2 -1 -3  0  4 -3 -4 -1 -6 
    18  L -2 -2 -3 -3 -2 -2 -2 -4 -2  2  6 -2  3  2 -4 -3 -1 -1  0  2 -3 -2 -1 -6 
    19  K -1  3  0  0 -3  1  1 -2 -1 -3 -2  6 -1 -3 -1  0  0 -2 -1 -2  0  1 -1 -6 
    20  M -1 -1 -2 -3 -3 -1 -2 -2  1  1  3 -1  7  0 -2 -2 -1 -2  1  1 -3 -2  0 -6 
    21  F -3 -2 -3 -4 -2 -4 -3 -3 -2  1  2 -3  0  9 -4 -2 -1  1  4  0 -3 -4 -1 -6 
    22  P -2 -3 -2 -2 -5 -2  0 -1 -2 -2 -4 -1 -2 -4 11 -1  0 -4 -3 -3 -2 -1 -2 -6 
    23  S  1 -1  1  0 -1  1  0  0 -1 -2 -3  0 -2 -2 -1  5  2 -5 -2 -1  0  0  0 -6 
    24  T  0 -2  0 -1 -1 -1 -1 -2 -2 -1 -1  0 -1 -1  0  2  6 -4 -1  1  0 -1  0 -6 
    25  W -3 -2 -4 -5 -6 -1 -2 -2 -5 -3 -1 -2 -2  1 -4 -5 -4 19  3 -3 -4 -2 -2 -6 
    26  Y -2 -1 -2 -3 -4 -1 -2 -3  2  0  0 -1  1  4 -3 -2 -1  3  9 -1 -3 -2 -1 -6 
    27  V  0 -2 -3 -3 -2 -3 -3 -4 -4  4  2 -2  1  0 -3 -1  1 -3 -1  5 -3 -3 -1 -6 
    28  B -1 -1  4  6 -2  0  1 -1  0 -3 -3  0 -3 -3 -2  0  0 -4 -3 -3  5  2 -1 -6 
    29  Z -1  0  0  1 -3  4  5 -2  0 -4 -2  1 -2 -4 -1  0 -1 -2 -2 -3  2  5 -1 -6 
    30  X  0 -1 -1 -1 -2 -1 -1 -1 -1 -1 -1 -1  0 -1 -2  0  0 -2 -1 -1 -1 -1 -1 -6 
    31  * -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6  1