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Routine tests are performed on regular weekly basis to assess the dust concentration within a production unit (mg/m3). The results are classified as follows: Excellent Very clean Fairly clean Acceptable Dusty 50 The status of dust concentration varies approximately from one week to the next according to the following Markov transition matrix: E V.C. F.C. Accept. Dusty E 0.65 0.25 0.08 0.02 0 V.C. 0.2 0.6 0.1 0.1 0 F.C. 0.1 0.2 0.5 0.15 0.05 Accept. 0.05 0.15 0.25 0.4 0.15 Dusty 0 0.05 0.15 0.25 0.55 After a fairly long time, what is the probability of finding the unit in excellent condition