function uploadFile() {
  let file = _("file1");
  let txt = "";

  if('files' in file){
    if(file.files.length == 0){
      txt = "Select one or more files.";

    } else {
      for(let i=0;i < file.files.length;i++){
        //request y declaracion iterada de files
        let ajax = new XMLHttpRequest();

        txt += "<br><strong>" + (i+1) + ". file</strong><br>";
        let x = file.files[i];

        //push en array
        ary.push(x);

        //logs
        if ('name' in x) {
          txt += "name: " + x.name + "<br>";

function progressHandler(event) {

  _("loaded_n_total").innerHTML = "Uploaded " + event.loaded + " bytes of " + event.total;
  let percent = (event.loaded / event.total) * 100;

  document.querySelectorAll('.progressBar').forEach(item => {
    item.value = Math.round(percent);
  });

  _("status").innerHTML = Math.round(percent) + "% uploaded... please wait";

}

function _(el) {
  return document.getElementById(el);
}

SELECT sestacion as nombre_estacion, MAX(tempmax) AS temperatura_maxima, MONTH(fecha) AS mes, YEAR(fecha) as year
FROM acisclo.datos
WHERE sestacion IN ('Bélmez', 'Hornachuelos', 'Palma del Río')
GROUP BY sestacion, MONTH(fecha), YEAR(fecha);

_bytetokey = {b'\x1b':'<Escape>',
              b'\xe0':{b'H':'<Up>',
                       b'P':'<Down>',
                       b'K':'<Left>',
                       b'M':'<Right>',
                       b'S':'<Supr>',
                       b'G':'<Inicio>',
                       b'I':'<Re Pag>',
                       b'Q':'<Av Pag>',
                       b'O':'<Fin>',
                       b'\x85':'<F11>',
                       b'\x86':'<F12>',
                       b'w':'<Control><Inicio>',

SELECT nombre_estacion, AVG(temperatura_maxima) as media_temperatura_maxima, mes
FROM(
  SELECT
    sestacion AS nombre_estacion,
    MAX(tempmax) AS temperatura_maxima,
    MONTH(fecha) AS mes,
    YEAR(fecha) as year
  FROM acisclo.datos
  WHERE sestacion IN ('Bélmez', 'Hornachuelos', 'Palma del Río')
  GROUP BY sestacion, MONTH(fecha), YEAR(fecha)
)
GROUP BY nombre_estacion, mes
ORDER BY nombre_estacion, mes;

SELECT nombre_estacion, AVG(temperatura_maxima) AS media_tmax, hora_tmax
FROM (
  SELECT
    sestacion AS nombre_estacion,
    MAX(tempmax) as temperatura_maxima,
    hormintempmax/100 AS hora_tmax
  FROM acisclo.datos
  GROUP BY sestacion, hormintempmax/100
)
GROUP BY nombre_estacion, hora_tmax
ORDER BY nombre_estacion, hora_tmax;