private function printAvgBlock($block)
    {
        if (!array_key_exists($block, $this->avgs)) {
            throw new \Exception('Average block '.$block.' not defined');
        }
        $this->finishAvgBlock($block);

        $output = "";
        $output .= "    $block";
        $output .= " [".$this->avgs[$block]['count']."]";
        $output .= " (".$this->avgs[$block]['start-line']."-".$this->avgs[$block]['stop-line'].")";
        $output .= ": ";
        $output .= round($this->avgs[$block]['avg'], 4);
        $output .= ' seconds';
        $output .= PHP_EOL;

        // Output max and min time
        $output .= "        max time: ".round($this->avgs[$block]['max-time'], 4).PHP_EOL;
        $output .= "        min time: ".round($this->avgs[$block]['min-time'], 4).PHP_EOL;

        return $output;
    }