Table 3. System dynamics metrics derived from the transition matrix

Metric	S0 (normal)	S1 (congested)	S2 (critical)
Stationary distribution π	0.332	0.338	0.330
Mean return time (days)	3.02	2.96	3.03
Hitting time to S0 (days)	—	5.85	7.82
Hitting time to S2 (days)	7.50	5.35	—