Altimeter is now reading FLIGHT LEVEL(S) at approx FL3.1 so FL 30 IS NOT AVAILABLE--The next available FL is FL3.5 but on the mag heading given in your question it would be FL50 (first quadrant = ODD)
Just a slip of the keyboard I'm sure, but the level to be flown in accordance with the quadrantal and semi-circular rules is determined by the magnetic track - not heading.