Data          [1]      [2]      [3]      [4]      [5]
bal. 20      65.7     17.5      3.9      4.2      3.1
bal. 21      64.2     19.3      4.5      3.5      2.9
bal. 22      64.8     18.7      4.5      3.5      2.8
bal. 23      63.6     19.8      4.2      3.9      2.6
bal. 24      63.1     20.2      4.2      3.8      2.7
bal. 25      63.8     19.8      4.2      3.6      2.7
bal. 26      63.8     18.5      4.6      4.5      2.8
bal. 27      63.1     18.6      4.1      4.8        3
bal. 28      64.3     19.1      4.1      3.8      2.8
bal. 29      63.7     18.6      4.1      4.5      2.8
bal. 30      63.6     18.8      3.9      4.7      2.7
geg. 1       66.2     18.2      3.6      3.6      3.6
geg. 2       65.1     19.2      3.6      3.5      3.5
geg. 3       64.5     18.9      3.7      4.1      3.1
geg. 4       63.4     20.3        4      3.8        3
geg. 5       62.6     20.9      4.1      3.7      3.1
geg. 6       61.4     20.5      4.5      4.6      3.2
geg. 7       61.8     20.7      4.7      3.8      3.1
geg. 8       62.4     21.1      4.4      3.4        3
geg. 9       62.1     21.5      4.6      3.2        3
geg. 10      61.9     21.1      4.1      3.9      3.3
geg. 11      61.2     21.2      4.5      4.3      2.9
geg. 12      62.3     20.8      4.2      3.4      3.4
geg. 13      62.6     20.4      4.1      3.7      3.2
geg. 14      62.5     20.9      4.1      3.5      3.2
geg. 15      62.8     20.6      3.8      3.6      2.8
geg. 16      62.4     20.5        4        4        3
geg. 17        63     20.5      4.1      3.4      3.1
geg. 18        62     19.3        4      4.3      3.4
geg. 19        62     19.9        4      4.4      3.1
geg. 20      61.3     20.4        4      4.3      3.3