Table 1.

Network performance assessment and classification if QoS metric belongs to m _max

					Network performance
<0	≤E threshold	↓	>0	1	Degrading
<0	≤E threshold	↓	>0	0	Not degrading or recovering
<0	≤E threshold	↓	=0	n.a.	Degrading
<0	≤E threshold	→ or ↑	n.a.	n.a.	Not degrading
<0	>E threshold	n.a.	n.a.	n.a.	Degrading
≥0	n.a.	n.a.	n.a.	n.a.	Not degrading