Whether any study has been done to ascertain the average amount of (a) delays, (b) cancellations, (c) brake down of trains and (d) track failures experienced by Metrorail in each month; if not, why not; if so, (i) what impact does this have on the (aa) economy and (bb) productivity of employees, (ii) what measures are being imposed to (aa) ensure a turnaround in reliability and (bb) provide a service that everyone can be proud of and (iii) what are the further relevant details?