Eu tenho um arquivo assim:
194104,41.8,38.3
194104,46.7,39.6
194104,47.4,39.7
194104,49.8,44.3
194104,50.8,47.5
194136,39.9,36.3
194136,45.2,37.8
194170,46.9,42.2
...
Eu quero manter as seis primeiras linhas, começando com 194104, e depoi...
30.03.2016 / 10:16