4. Selection methodology

The possibilities of the various levels are shown in the tables 2 , 3 , 4 , 5 and 6 which, for each particular case, refer to a graph in figure 1 whose code appears at the intersection of each row and column, specifying the acceptable pv areas.

Considering that the best solution will be the least costly of those that meet the technical requirements of the specifications, we thought it would be interesting to rank the different solutions in ascending order of cost in tables