question arises, why airbus could not provide any chart/table that could state the possible climb gradient in various conditions, all engine/single engine? what is the difficulty in designing such a chart? too many variables? lets consider what all factors, climb angle depends upon. IAS, weight, OAT, PA, tailwind/headwind. One thing I noticed is that varying IAS during takeoff climb and acceleration would make it difficult to publish a single climb angle figure. Also the changes in the wind direction from ground above would also make it impossible to state a single climb angle.