15
      For the curve in figure 5 the same comments of the curve in figure 4 hold. In spite of this one, the curve in figura 5 has a low correlation coefficient. Probably, the value of the attraction factor for the activity
fishing depends in a non negligible way on elements differing from the
length of the river bank and measurable with difficulty (e.g. the fish
availability!).
FIGURE 6. Relationship between the attraction factor w4 and the number of the refresh ment places near the river N for the activity picnicking along the river
5
FIGURE 7. Relationship betweeg the attraction factor w and the number of the refresh ment places far from the river N2 for the activity picnicking in the rest of the park
      For a comment of the different shape of the attraction factor in relation to analogous variables as the number of the refreshment places near the river and far from the river (figures 6 and 7) see the comment made for the table 2.
      We note that the curve in figure 8 states from a point of the positive semi-axis of abscissas. It follows that, if the length of the pedestrian roads does not exceed a given length, the visitors do not practise the activity walking in the park and this agrees with the observed visitors