Table 1.
Vector Length for Three Ages with Linear and Bilinear Modelsa
| Vector | Line | Slope (1st) | Slope (2nd) | V.L. at 20 | V. L. at 67.7 | V. L. at 80 | r2 |
|---|---|---|---|---|---|---|---|
| Protan | Mean | 0.409 | – | 47.0 | (66.5) | 71.6 | 0.144 |
| Mean + ISD | 0.619 | – | 61.4 | (90.9) | 98.5 | – | |
| Mean + 2 SD | 0.829 | – | 75.7 | (115.3) | 125.5 | – | |
| Deutan | Mean | 0.468 | – | 45.6 | (67.9) | 73.7 | 0.185 |
| Mean + ISD | 0.812 | – | 55.6 | (94.3) | 104.3 | – | |
| Mean + 2 SD | 1.149 | 65.4 | (120.2) | 134.4 | – | ||
| Tritan | Mean | 0.992 | 10.02 | 72.4 | 119.7 | 243.0 | 0.449 |
| Mean + ISD | 1.723 | 13.45 | 100.7 | 182.8 | 348.5 | – | |
| Mean + 2 SD | 2.454 | 16.89 | 128.9 | 246.0 | 453.9 | – |
a
V.L. refers to vector length; slope (2nd) denotes the slope of the second linear function in the bilinear model fitted to the tritan vectors.