draw_lines_time(ncfilens, values, varnames):
  ncfilens= [filen] ',' separated list of netCDF files
  values= [dimvname];[valuesaxis];[dimtit];[dimxyfmt];[leglabels];[vtit];[title];[rangevals];[timevals];
    [legvals];[graphk];[collines];[points];[linewidths];[pointsizes];[pointfreq];[period];[close]
    [dimvname]: ',' list of names of the variables with he values of the common dimension ('WRFtime' for WRF Times variable)
    [valuesaxis]: which axis will be used for the values ('x', or 'y')
    [dimtit]: title for the common dimension ('|' for spaces)
    [dimxyfmt]=[dxs],[dxf],[Ndx],[ordx],[dys],[dyf],[Ndy],[ordx]: format of the values at each axis (or 'auto')
      [dxs]: style of x-axis ('auto' for 'pretty')
        'Nfix', values computed at even 'Ndx'
        'Vfix', values computed at even 'Ndx' increments
        'pretty', values computed following aprox. 'Ndx' at 'pretty' intervals (2.,2.5,4,5,10)
      [dxf]: format of the labels at the x-axis ('auto' for '%5g')
      [Ndx]: Number of ticks at the x-axis ('auto' for 5)
      [ordx]: angle of orientation of ticks at the x-axis ('auto' for horizontal)
      [dys]: style of y-axis ('auto' for 'pretty')
      [dyf]: format of the labels at the y-axis ('auto' for '%5g')
      [Ndy]: Number of ticks at the y-axis ('auto' for 5)
      [ordy]: angle of orientation of ticks at the y-axis ('auto' for horizontal)
    [leglabels]: ',' separated list of names for the legend ('None', no legend '!' for spaces, '*' for no label)
    [vartit]: name of the variable in the graph
    [title]: title of the plot ('|' for spaces)
    [rangevals]: Range of the axis with the values ('None' for 'auto','auto')
      [vmin],[vmax]: minimum and maximum values where [vmNN] can also be:
      'auto': the computed minimumm or maximum of the values
    [timevals]: [timen]|[units]|[kind]|[tfmt] time labels characteristics
      [timen]; name of the time variable
      [units]; units string according to CF conventions ([tunits] since
        [YYYY]-[MM]-[DD] [[HH]:[MI]:[SS]], '!' for spaces)
      [kind]; kind of output
      'Nval': according to a given number of values as 'Nval',[Nval]
      'exct': according to an exact time unit as 'exct',[tunit];
        tunit= [Nunits],[tu]; [tu]= 'c': centuries, 'y': year, 'm': month,
          'w': week, 'd': day, 'h': hour, 'i': minute, 's': second,
          'l': milisecond
      [tfmt]; desired format
    [legvals]=[locleg]|[fontsize]:
      [locleg]: location of the legend (0, autmoatic)
        1: 'upper right', 2: 'upper left', 3: 'lower left', 4: 'lower right',
        5: 'right', 6: 'center left', 7: 'center right', 8: 'lower center',
        9: 'upper center', 10: 'center'
      [fontsize]: font size for the legend (auto for 12)
      [Ncols]: number of columns in the legend
    [graphk]: kind of the graphic
    [lines]: ',' list of type of lines, None for automatic, single value all the same
    [collines]: ',' list of colors for the lines, None for automatic, single
      value all the same
    [points]: '@' list of type of points for the lines, None for automatic, single
      value all the same
    [linewidths]: ',' list of widths for the lines, None for automatic, single
      value all the same
    [pointsizes]: ',' list of widths for the lines, None for automatic, single
      value all the same
    [pointfreq]: frequency of point plotting (every given number of values),
      'all' to plot all values using all time steps
      'runmean',[Nsteps]: computing a running mean of [Nsteps] along all values     [period]: which period to plot
      '-1': all period
      [beg],[end]: beginning and end of the period in reference time-units of first file
    [close]: Whether figure should be finished or not
  varnames= ',' list of variable names to plot (assuming only 1 variable per file)