old_contents: import pygrib
  import numpy as np
  import matplotlib.pyplot as plt
  import pyproj
  from mpl_toolkits.basemap import Basemap
  grbs = pygrib.open('../sampledata/rotated_ll.grib1')
  grb = grbs.next()
  lats, lons = grb.latlons()
  data = grb['values']
  m = Basemap(projection='stere',lon_0=5,lat_0=60,width=4000.e3,height=3000.e3,resolution='l')
  x,y = m(lons,lats)
  m.drawcoastlines()
  m.contourf(x,y,data,15)
  m.scatter(x[::10,::10].flat,y[::10,::10].flat,1,marker='o',color='k',zorder=10)
  m.drawmeridians(np.arange(-60,61,5))
  m.drawparallels(np.arange(20,80,5))
  plt.title(grb['name'])
  plt.show()
  
new_contents: import pygrib
  import numpy as np
  import matplotlib.pyplot as plt
  from mpl_toolkits.basemap import Basemap
  grbs = pygrib.open('../sampledata/rotated_ll.grib1')
  grb = grbs.next()
  lats, lons = grb.latlons()
  data = grb['values']
  m = Basemap(projection='stere',lon_0=5,lat_0=60,width=4000.e3,height=3000.e3,resolution='l')
  x,y = m(lons,lats)
  m.drawcoastlines()
  m.contourf(x,y,data,15)
  m.scatter(x[::10,::10].flat,y[::10,::10].flat,1,marker='o',color='k',zorder=10)
  m.drawmeridians(np.arange(-60,61,5))
  m.drawparallels(np.arange(20,80,5))
  plt.title(grb['name'])
  plt.show()
  
subject: remove debug code