| Linguistic terms | Linguistic scale |
| Very Poor (VP) | ((−1.0, −0.9, −0.8, −0.7; 0.8, 0.8), (−1.0, −1.0, −0.8, −0.6; 1, 1)) | Poor (P) | ((−0.8, −0.7, −0.5, −0.4; 0.8, 0.8), (−0.9, −0.7, −0.5, −0.3; 1, 1)) | Medium Poor (MP) | ((−0.5, −0.4, −0.2, −0.1; 0.8, 0.8), (−0.6, −0.4, −0.2, 0; 1, 1)) | Medium (M) | ((−0.2, −0.1, 0.1, 0.2; 0.8, 0.8), (−0.3, −0.2, 0.2, 0.3; 1, 1)) | Medium Good (MG) | ((0.1, 0.2, 0.4, 0.5; 0.8, 0.8), (0, 0.2, 0.4, 0.6; 1, 1)) | Good (G) | ((0.4, 0.5, 0.7, 0.8; 0.8, 0.8), (0.3, 0.5, 0.7, 0.9; 1, 1)) | Very Good (VG) | ((0.7, 0.8, 1.0, 1.0; 0.8, 0.8), (0.6, 0.8, 1.0, 1.0; 1, 1)) |
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