public static function generateRow()
{
$row = static::$key;
$row[] = (new Cell("weather"))->setValue("hot");
$row[] = (new Cell("temperature"))->setDoubleValue(23.5);
$row[] = (new Cell("uv_index"))->setIntValue(10);
$row[] = (new Cell("observed"))->setBooleanValue(true);
return $row;
}