Data          [1]      [2]      [3]      [4]
bal. 12      90.9        0        0      9.1
bal. 13        80       10        0       10
bal. 14        70       10       10       10
bal. 15        75     16.7        0      8.3
bal. 16      76.9     15.4        0      7.7
bal. 17        75     18.8        0      6.2
bal. 18        75     18.8        0      6.2
bal. 19        75     12.5      6.2      6.2
bal. 20      76.5     17.6        0      5.9
bal. 21      88.2      5.9        0      5.9
bal. 22      87.5      6.2        0      6.2
bal. 23      94.4        0        0      5.6
bal. 24      92.9        0        0      7.1
bal. 25      94.4        0        0      5.6
bal. 26      93.3        0        0      6.7
bal. 27      94.1        0        0      5.9
bal. 28      93.8        0        0      6.2
bal. 29      94.1        0        0      5.9
bal. 30      94.1        0        0      5.9
geg. 1       94.4        0        0      5.6
geg. 2       87.5      6.2        0      6.2
geg. 3       88.9      5.6        0      5.6
geg. 4       86.7      6.7        0      6.7
geg. 5       88.9      5.6        0      5.6
geg. 6       89.5      5.3        0      5.3
geg. 7       88.2      5.9        0      5.9
geg. 8       94.7        0        0      5.3
geg. 9       82.4     11.8        0      5.9
geg. 10      76.5     17.6        0      5.9
geg. 11      77.8     11.1      5.6      5.6
geg. 12      73.3      6.7     13.3      6.7