Data          [1]      [2]      [3]      [4]
bal. 13      44.7     36.8     18.4        0
bal. 14      31.1     33.3     26.7      2.2
bal. 15      36.5     26.9     28.8      3.8
bal. 16      38.9     27.8     27.8        0
bal. 17      42.9     26.2     28.6      2.4
bal. 18      46.3     31.7     19.5      2.4
bal. 19      61.3     22.6     12.9        0
bal. 20      63.3     23.3      6.7        0
bal. 21      44.2     25.6     23.3      4.7
bal. 22      42.6     31.9     19.1        0
bal. 23      34.8       37     21.7      4.3
bal. 24      53.2     23.4     21.3      2.1
bal. 25      41.5       39     17.1      2.4
bal. 26      44.8     34.5     10.3      6.9
bal. 27      44.1     32.4     17.6      2.9
bal. 28      43.2     35.1     18.9      2.7
bal. 29        35     32.5     27.5        0
bal. 30      51.7       31     17.2        0
geg. 1       23.5     52.9     17.6      5.9
geg. 2       21.4     42.9     28.6      7.1
geg. 3       11.8     47.1     35.3        0
geg. 4       12.5     43.8     37.5      6.2
geg. 5       17.4     47.8     26.1      4.3
geg. 6          0       50     43.8      3.1
geg. 7       17.4     47.8     34.8        0
geg. 8          0     65.4     26.9      7.7
geg. 9         35       40       20        0
geg. 10        35       30       15        5
geg. 11        35       35       30        0
geg. 12        15       60       15        0
geg. 13      19.4     45.2     22.6      3.2
    viso     1044     1159      717     79.7