Figure 29 shows the results with and without the integration of model 4. The results can also be found in Table 8, and it illustrates very clear that model 2, which also uses model 4, produces really good results. If model 4 is also included in model 3, then the results increase approximately with ten percent (see Figure 30). This increase can be counted due the decrease of the standard deviations of the final TSR values of all companies (see Figure 31). Hence we can conclude that model 4 is of great help in reducing the time dependency of the TSR values.