The Chou-Fasman method of secondary structure prediction depends on assigning a set of prediction values to a residue and then applying a simple algorithm to those numbers. The table of numbers is as follows:

Name           P(α)   P(β)  P(β-turn)   f(i)    f(i+1)  f(i+2)  f(i+3)

Alanine        1.42   0.83    0.66      0.06    0.076   0.035   0.058
Arginine       0.98   0.93    0.95      0.070   0.106   0.099   0.085
Aspartic Acid  1.01   0.54    1.46      0.147   0.110   0.179   0.081
Asparagine     0.67   0.89    1.56      0.161   0.083   0.191   0.091
Cysteine       0.70   1.19    1.19      0.149   0.050   0.117   0.128
Glutamic Acid  1.39   1.07    0.74      0.056   0.060   0.077   0.064
Glutamine      1.11   1.05    0.98      0.074   0.098   0.037   0.098
Glycine        0.57   0.75    1.56      0.102   0.085   0.190   0.152
Histidine      1.00   0.87    0.95      0.140   0.047   0.093   0.054
Isoleucine     1.08   1.60    0.47      0.043   0.034   0.013   0.056
Leucine        1.41   1.20    0.59      0.061   0.025   0.036   0.070
Lysine         1.14   0.74    1.01      0.055   0.115   0.072   0.095
Methionine     1.45   1.05    0.60      0.068   0.082   0.014   0.055
Phenylalanine  1.13   1.38    0.60      0.059   0.041   0.065   0.065
Proline        0.57   0.55    1.52      0.102   0.301   0.034   0.068
Serine         0.77   0.75    1.43      0.120   0.139   0.125   0.106
Threonine      0.83   1.19    0.96      0.086   0.108   0.065   0.079
Tryptophan     1.08   1.37    0.96      0.077   0.013   0.064   0.167
Tyrosine       0.89   1.47    1.04      0.082   0.065   0.114   0.125
Valine         1.06   1.70    0.50      0.062   0.048   0.028   0.053

The numbers in the first three columns, P(α) P(β) P(turn), are about equivalent to preference parameters for the 20 amino acids for α-helix, β-strand and β-turn respectively, though 1.0 was added to each preference parameter. A preference parameter is the logarithm of the observed counts divided by the expected counts. A preference parameter of 0.0 (which corresponds to 1.0 in this column) indicates that something happens just as often as one expects. Unfortunately Chou and Fasman's mathematicss wasn't up to today's standards so these parameters aren't calculated correctly, but the correct numbers aren't too different from these ones....