Which of the following flight levels, if any, is forecast to be clear of significant cloud, icing and CAT along the marked route from SHANNON (53N 10W) to BERLIN (53N 13E)?
None
FL290
FL210
FL250
Which of the following flight levels, if any, is forecast to be clear of significant cloud, icing and CAT along the marked route from SHANNON (53N 10W) to BERLIN (53N 13E)?