Data          [1]      [2]      [3]      [4]
bal. 17      88.5      5.6      3.5      2.3
bal. 18        88      5.9      3.6      2.6
bal. 19      87.5      6.3      3.4      2.9
bal. 20      87.9        6      3.2        3
bal. 21      88.2      5.9      3.4      2.5
bal. 22      87.9      6.3      3.2      2.5
bal. 23      87.6      6.7      3.3      2.4
bal. 24      88.5      5.3      3.7      2.4
bal. 25      87.9      5.9      3.6      2.6
bal. 26      88.5      5.9      3.1      2.5
bal. 27      88.5      5.9        3      2.5
bal. 28      88.3      6.3      3.4        2
bal. 29      88.5      6.2      3.5      1.8
bal. 30      88.4      6.5      3.5      1.6
geg. 1       88.6      6.2      3.8      1.4
geg. 2       88.5        6      4.1      1.4
geg. 3       88.1      6.5      3.8      1.6
geg. 4       88.7      6.1      3.5      1.7
geg. 5       89.2      5.8      3.3      1.8
geg. 6       89.3      5.9        3      1.9
geg. 7       88.2      6.6      3.4      1.8
geg. 8       88.1      6.6      3.4      1.9
geg. 9       88.1      6.6      3.5      1.7
geg. 10      87.9      6.8      3.6      1.7
geg. 11      87.9      6.6      3.7      1.9
geg. 12      87.8      6.5      3.7        2
geg. 13      88.2      6.1      3.5      2.2
geg. 14      88.6      5.5      3.7      2.2
geg. 15      88.5      5.8      3.6      2.1
geg. 16      87.9      6.1      3.3      2.7
geg. 17      87.9      6.6      2.7      2.8