ui->temperaturetableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
ui->temperaturetableWidget->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);
ui->temperaturetableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
ui->temperaturetableWidget->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);