|  | Archaea/bacteria | Eukaryotes | ||||
---|---|---|---|---|---|---|---|
 | Amino acids/codons | Observed | Four-parameter | 24-parameter | Observed | Four-parameter | 24-parameter |
Observed | Slope | - | 0.89 | 0.93 | - | 0.88 | 0.92 |
 | Intercept | - | 0.91 | 0.92 | - | 0.90 | 0.91 |
Four-parameter | Slope | 0.83 | - | 0.95 | 0.80 | - | 0.96 |
 | Intercept | 0.82 | - | 0.99 | 0.80 | - | 0.98 |
24-parameter | Slope | 0.90 | 0.94 | - | 0.85 | 0.95 | - |
 | Intercept | 0.86 | 0.96 | - | 0.80 | 0.95 | - |