Data          [1]      [2]      [3]      [4]
bal. 12      88.9      4.7      3.6      2.8
bal. 13        89      4.7      3.6      2.8
bal. 14        89      4.6      3.5      2.8
bal. 15      88.7      5.1      3.2        3
bal. 16      88.7      4.9      3.4      2.9
bal. 17      89.1      4.5      3.7      2.7
bal. 18      88.5      5.1      3.5      2.8
bal. 19      88.6      5.2      3.5      2.7
bal. 20      88.5      5.3      3.5      2.8
bal. 21      88.2      5.6      3.6      2.6
bal. 22      87.6        6      3.7      2.7
bal. 23      86.9      6.2        4      2.9
bal. 24      86.8      6.2      4.1      2.9
bal. 25      86.4      6.3      3.9      3.3
bal. 26      86.1      6.5        4      3.5
bal. 27        86      6.2      4.2      3.6
bal. 28      85.8      6.1      4.4      3.7
bal. 29      85.8      6.4      4.2      3.5
bal. 30      85.9      6.4      4.4      3.3
geg. 1       85.8      6.6      4.3      3.3
geg. 2       85.6      6.8      4.4      3.1
geg. 3       85.7        7      4.2      3.1
geg. 4       85.9      6.7      4.2      3.1
geg. 5       86.3      6.7      4.1        3
geg. 6       86.5      6.4      4.3      2.8
geg. 7       86.5      6.5      4.3      2.6
geg. 8       86.2      6.9      4.3      2.6
geg. 9       85.8      6.9      4.6      2.7
geg. 10      85.3      7.5      4.5      2.7
geg. 11      85.5        7      4.6      2.9
geg. 12      85.7      6.6      4.7      2.9