myCorrTableWidget->setHorizontalHeaderItem(0, aHeader_1);
myCorrTableWidget->setHorizontalHeaderItem(1, aHeader_2);
myCorrTableWidget->setHorizontalHeaderItem(2, aHeader_3);
myCorrTableWidget->setHorizontalHeaderItem(0, aHeader_1);
myCorrTableWidget->setHorizontalHeaderItem(1, aHeader_2);
myCorrTableWidget->setHorizontalHeaderItem(2, aHeader_3);