for (int i = 1; i <= numServers; i++) {
String id = produceID((String) stm.getValueAt(i, 0));
SimServer s = serv.get(id);
try{
SimReportServerStats sst = (SimReportServerStats)rs.getServStats().get(s);
stm.setValueAt(String.format("%.2f", sst.getAvgQLength()+sst.getAvgResNumber()), i, 1);
stm.setValueAt(String.format("%.1f",lambda*(getUnfoldedSum(id)*l_)), i, 2);
stm.setValueAt(String.format("%.2f", sst.getAvgServTime()+sst.getAvgWaitTime()), i, 3);
stm.setValueAt(String.format("%.2f", sst.getAvgServTime()), i, 4);
stm.setValueAt(String.format("%.2f", sst.getAvgWaitTime()), i, 5);
}catch(Exception e){
stm.setValueAt("", i, 1);
stm.setValueAt("", i, 2);
stm.setValueAt("", i, 3);
stm.setValueAt("", i, 4);